SECURITIES & EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             ----------------------

                                  SCHEDULE 13D*
                                 (Rule 13d-101)

           INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO
           13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2(a)


                                  AIRGAS, INC.
             ------------------------------------------------------
                                (Name of Issuer)

                     Common Stock, par value $0.01 per share
             ------------------------------------------------------
                         (Title of Class of Securities)

                                    009363102
             ------------------------------------------------------
                                 (CUSIP NUMBER)

                       Eton Park Capital Management, L.P.
                            399 Park Ave, 10th Floor
                               New York, NY 10022
                          Attention: Marcy Engel, Esq.

                                 (212) 756-5300
             ------------------------------------------------------
                  (Name, address and telephone number of person
                authorized to receive notices and communications)

                                  MAY 21, 2010
             ------------------------------------------------------
            (Date of event which requires filing of this statement)

     If the filing person has previously filed a statement on Schedule 13G to
report the acquisition which is the subject of this Schedule 13D, and is filing
this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the
following box [ ].

     NOTE: Schedules filed in paper format shall include a signed original and
five copies of the schedule, including all exhibits. See Rule 13d-7 for other
parties to whom copies are to be sent.

                        (Continued on following pages)

                              (Page 1 of 14 Pages)

-------------------------------------------------------------------------------


     The information required in the remainder of this cover page shall not be
deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act
of 1934 ("Act") or otherwise subject to the liabilities of that section of the
Act but shall be subject to all other provisions of the Act (however, see the
Notes).






CUSIP No. 009363102               13D                    Page 2 of 14 Pages
-------------------------------------------------------------------------------
     (1)    NAME OF REPORTING PERSONS

            Eton Park Fund, L.P.
-------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
            (see instructions)
                                                                  (a)  [X]
                                                                  (b)  [ ]
-------------------------------------------------------------------------------
     (3)    SEC USE ONLY

-------------------------------------------------------------------------------
     (4)    SOURCE OF FUNDS (see instructions) WC (see item 3)
-------------------------------------------------------------------------------
     (5)    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
            REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)                       [ ]
-------------------------------------------------------------------------------
     (6)    CITIZENSHIP OR PLACE OF ORGANIZATION
            Delaware
-------------------------------------------------------------------------------
NUMBER OF      (7)  SOLE VOTING POWER
                    -0-
SHARES         ______________________________________________________________

BENEFICIALLY   (8)  SHARED VOTING POWER
                    2,104,970 shares of common stock
OWNED BY       ______________________________________________________________

EACH           (9)  SOLE DISPOSITIVE POWER
                    -0-
REPORTING      ______________________________________________________________

PERSON WITH    (10) SHARED DISPOSITIVE POWER
                    2,104,970 shares of common stock

-------------------------------------------------------------------------------
     (11)    AGGREGATE AMOUNT BENEFICIALLY OWNED
             BY EACH REPORTING PERSON
             2,104,970 shares of common stock
-------------------------------------------------------------------------------
     (12)    CHECK BOX IF THE AGGREGATE AMOUNT
             IN ROW (11) EXCLUDES CERTAIN SHARES (see instructions)       [ ]
-------------------------------------------------------------------------------
     (13)    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
             2.54%
-------------------------------------------------------------------------------
     (14)    TYPE OF REPORTING PERSON (see instructions)
             PN
-------------------------------------------------------------------------------






CUSIP No. 009363102               13D                    Page 3 of 14 Pages
-------------------------------------------------------------------------------
     (1) NAME OF REPORTING PERSONS

            Eton Park Master Fund, Ltd.
-------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
            (see instructions)
                                                                  (a)  [X]
                                                                  (b)  [ ]
-------------------------------------------------------------------------------
     (3)    SEC USE ONLY

-------------------------------------------------------------------------------
     (4)    SOURCE OF FUNDS (see instructions) WC (see item 3)
-------------------------------------------------------------------------------
     (5)    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
            REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)                       [ ]
-------------------------------------------------------------------------------
     (6)    CITIZENSHIP OR PLACE OF ORGANIZATION
            Cayman Islands
-------------------------------------------------------------------------------
NUMBER OF      (7)  SOLE VOTING POWER
                    -0-
SHARES         ______________________________________________________________

BENEFICIALLY   (8)  SHARED VOTING POWER
                    3,909,230 shares of common stock
OWNED BY       ______________________________________________________________

EACH           (9)  SOLE DISPOSITIVE POWER
                    -0-
REPORTING      ______________________________________________________________

PERSON WITH    (10) SHARED DISPOSITIVE POWER
                    3,909,230 shares of common stock
-------------------------------------------------------------------------------
     (11)    AGGREGATE AMOUNT BENEFICIALLY OWNED
             BY EACH REPORTING PERSON
             3,909,230 shares of common stock
-------------------------------------------------------------------------------
     (12)    CHECK BOX IF THE AGGREGATE AMOUNT
             IN ROW (11) EXCLUDES CERTAIN SHARES (see instructions)       [ ]
-------------------------------------------------------------------------------
     (13)    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
             4.73%
-------------------------------------------------------------------------------
     (14)    TYPE OF REPORTING PERSON (see instructions)
 CO
-------------------------------------------------------------------------------





CUSIP No. 009363102                 13D                  Page 4 of 14 Pages
-------------------------------------------------------------------------------
     (1)    NAME OF REPORTING PERSONS

            Eton Park Associates, L.P.
-------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
            (see instructions)
                                                                  (a) [X]
                                                                  (b)  [ ]
-------------------------------------------------------------------------------
     (3)    SEC USE ONLY

-------------------------------------------------------------------------------
     (4)    SOURCE OF FUNDS (see instructions) AF
-------------------------------------------------------------------------------
     (5)    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
            REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)                       [ ]
-------------------------------------------------------------------------------
     (6)    CITIZENSHIP OR PLACE OF ORGANIZATION
            Delaware
-------------------------------------------------------------------------------
NUMBER OF      (7)  SOLE VOTING POWER
                    -0-
SHARES         ______________________________________________________________

BENEFICIALLY   (8)  SHARED VOTING POWER
                    2,104,970 shares of common stock
OWNED BY       ______________________________________________________________

EACH           (9)  SOLE DISPOSITIVE POWER
                    -0-
REPORTING      ______________________________________________________________

PERSON WITH    (10) SHARED DISPOSITIVE POWER
                    2,104,970 shares of common stock

-------------------------------------------------------------------------------
     (11)    AGGREGATE AMOUNT BENEFICIALLY OWNED
             BY EACH REPORTING PERSON
             2,104,970 shares of common stock
-------------------------------------------------------------------------------
     (12)    CHECK BOX IF THE AGGREGATE AMOUNT
             IN ROW (11) EXCLUDES CERTAIN SHARES (see instructions)       [ ]
-------------------------------------------------------------------------------
     (13)    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
             2.54%
-------------------------------------------------------------------------------
     (14)    TYPE OF REPORTING PERSON (see instructions)
             PN
-------------------------------------------------------------------------------





CUSIP No. 009363102                 13D                  Page 5 of 14 Pages
-------------------------------------------------------------------------------
     (1)    NAME OF REPORTING PERSONS

            Eton Park Capital Management, L.P.
-------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
            (see instructions)
                                                                  (a)  [X]
                                                                  (b)  [ ]
-------------------------------------------------------------------------------
     (3)    SEC USE ONLY

-------------------------------------------------------------------------------
     (4)    SOURCE OF FUNDS (see instructions) AF
-------------------------------------------------------------------------------
     (5)    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
            REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)                       [ ]
-------------------------------------------------------------------------------
     (6)    CITIZENSHIP OR PLACE OF ORGANIZATION
            Delaware
-------------------------------------------------------------------------------
NUMBER OF      (7)  SOLE VOTING POWER
                    -0-
SHARES         ______________________________________________________________

BENEFICIALLY   (8)  SHARED VOTING POWER
                    6,014,200 shares of common stock
OWNED BY       ______________________________________________________________

EACH           (9)  SOLE DISPOSITIVE POWER
                    -0-
REPORTING      ______________________________________________________________

PERSON WITH    (10) SHARED DISPOSITIVE POWER
                    6,014,200 shares of common stock
-------------------------------------------------------------------------------
     (11)    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
             6,014,200 shares of common stock
-------------------------------------------------------------------------------
     (12)    CHECK BOX IF THE AGGREGATE AMOUNT
             IN ROW (11) EXCLUDES CERTAIN SHARES (see instructions)       [ ]
-------------------------------------------------------------------------------
     (13)    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
             7.27%
-------------------------------------------------------------------------------
     (14)    TYPE OF REPORTING PERSON (see instructions)
             IA
-------------------------------------------------------------------------------





CUSIP No. 009363102                 13D                  Page 6 of 14 Pages
-------------------------------------------------------------------------------

     (1)    NAME OF REPORTING PERSONS

            Eric M. Mindich
-------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
            (see instructions)
                                                                  (a)  [X]
                                                                  (b)  [ ]
-------------------------------------------------------------------------------
     (3) SEC USE ONLY

-------------------------------------------------------------------------------
     (4)    SOURCE OF FUNDS (see instructions) AF
-------------------------------------------------------------------------------
     (5)    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
            REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)                       [ ]
-------------------------------------------------------------------------------
     (6)    CITIZENSHIP OR PLACE OF ORGANIZATION
            United States of America
-------------------------------------------------------------------------------
NUMBER OF      (7)  SOLE VOTING POWER
                    -0-
SHARES         ______________________________________________________________

BENEFICIALLY   (8)  SHARED VOTING POWER
                    6,014,200 shares of common stock
OWNED BY       ______________________________________________________________

EACH           (9)  SOLE DISPOSITIVE POWER
                    -0-
REPORTING      ______________________________________________________________

PERSON WITH    (10) SHARED DISPOSITIVE POWER
                    6,014,200 shares of common stock
-------------------------------------------------------------------------------
     (11)    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
             6,014,200 shares of common stock
-------------------------------------------------------------------------------
     (12)    CHECK BOX IF THE AGGREGATE AMOUNT
             IN ROW (11) EXCLUDES CERTAIN SHARES (see instructions)       [ ]
-------------------------------------------------------------------------------
     (13)    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
             7.27%
-------------------------------------------------------------------------------
     (14)    TYPE OF REPORTING PERSON (see instructions) IN
-------------------------------------------------------------------------------





CUSIP No. 009363102                 13D                  Page 7 of 14 Pages



Item 1.     Security and Issuer.

          This  statement on Schedule 13D (the  "Schedule  13D")  relates to the
shares of common  stock,  par value $0.01 per share (the  "Shares"),  of Airgas,
Inc, a Delaware  corporation (the "Company").  The Company's principal executive
offices are located at 259 North  Radnor-Chester  Road,  Suite 100,  Radnor,  PA
19087-5283.

Item 2.     Identity and Background.

     (a) This Schedule 13D is filed by:

          (i)       Eton Park Fund,  L.P., a Delaware  limited  partnership ("EP
                    Fund"), with respect to the Shares directly held by it;
         (ii)       Eton Park  Master  Fund,  Ltd.,  a Cayman  Islands  exempted
                    company  ("EP  Master  Fund"),  with  respect  to the Shares
                    directly held by it;
        (iii)       Eton Park Associates,  L.P., a Delaware limited  partnership
                    ("EP Associates"), which serves as the general partner of EP
                    Fund, with respect to the Shares directly held by EP Fund;
         (iv)       Eton Park  Capital  Management,  L.P.,  a  Delaware  limited
                    partnership  ("EP  Management"),  which serves as investment
                    manager to each of EP Fund and EP Master Fund,  with respect
                    to the Shares directly held by each of EP Fund and EP Master
                    Fund; and
          (v)       Eric M. Mindich ("Mr. Mindich"),  with respect to the Shares
                    directly  held by each of EP Fund and EP  Master  Fund.  Mr.
                    Mindich  disclaims   beneficial   ownership  of  the  Shares
                    reported herein, other than the portion of such Shares which
                    relates to his  individual  economic  interest in each of EP
                    Fund and EP Master Fund.

          The foregoing persons are hereinafter sometimes  collectively referred
to as the "Reporting Persons."

     (b)  The address of the business office of each of the Reporting Persons is
          399 Park Ave, 10th Floor, NY, NY 10022.

     (c)  The  principal  business  of:  (i) EP Fund is to  serve  as a  private
investment  limited  partnership,  (ii) EP Master  Fund is to serve as a private
investment  exempted  company,  (iii) EP  Associates  is to serve as the general
partner of EP Fund,  (iv) EP Management  is to serve as investment  manager to a
variety of private  investment funds,  including EP Fund and EP Master Fund, and
to make investment  decisions on behalf of these private  investment  funds, and
(v) Mr. Mindich,  an individual,  is to serve as Chief  Executive  Officer of EP
Management.

     (d) None of the  Reporting  Persons has,  during the last five years,  been
convicted in a criminal  proceeding  (excluding  traffic  violations  or similar
misdemeanors).

     (e) None of the Reporting Persons has, during the last five years, been a
party to a civil proceeding of a judicial or administrative body of competent
jurisdiction and, as a result of such proceeding, was, or is subject to, a
judgment, decree or final order enjoining future violations of, or prohibiting





CUSIP No. 009363102                 13D                  Page 8 of 14 Pages



or mandating activities subject to, Federal or State securities laws or finding
any violation with respect to such laws.

     (f) EP Fund is a limited partnership  organized under the laws of the State
of Delaware.  EP Master Fund is a company organized under the laws of the Cayman
Islands.  EP Associates  and EP Management  are limited  partnerships  organized
under the laws of the State of Delaware. Mr. Mindich is a United States citizen.

The Reporting Persons have executed a Joint Acquisition Statement, dated May 28,
2010,  with respect to the joint filing of this  Schedule 13D, and any amendment
or amendments hereto, a copy of which is attached hereto as Exhibit 1.

Schedule A attached hereto sets forth the information required by Instruction C
of the instructions to Schedule 13D.


Item 3.     Source and Amount of Funds and Other Consideration.

          Funds for the  purchase  of the  Shares by EP Fund and EP Master  Fund
reported  herein were derived from general  working  capital and margin  account
borrowings  made in the ordinary  course of  business.  In such  instances,  the
positions held in the margin accounts are pledged as collateral security for the
repayment of debit  balances in the account,  which may exist from time to time.
Since other  securities are held in the margin  accounts,  it is not possible to
determine  the amounts,  if any, of margin used to purchase the Shares  reported
herein.  A total of  approximately  $370  million was paid to acquire the Shares
reported herein.

Item 4.     Purpose of the Transaction.

          The Reporting  Persons  acquired the Shares to which this Schedule 13D
relates for investment purposes in the ordinary course of business, and not with
the  purpose  nor with the effect of  changing  or  influencing  the  control or
management of the Company. The Reporting Persons acquired the Shares pursuant to
investment  strategies,  including merger arbitrage and event driven strategies,
because  they  believed  that  the  Shares  reported  herein,   when  purchased,
represented  an  attractive  investment  opportunity.  On February 5, 2010,  Air
Products and  Chemicals,  Inc.  issued a press release  announcing  its offer to
acquire the Company (the "Proposed  Acquisition") by way of a tender offer. As a
result, under the interpretations of the Securities and Exchange Commission, the
acquisition of the Shares reported herein is being reported on Schedule 13D.

          Except as set forth herein, the Reporting Persons have no present plan
or  proposal  that would  relate to or result in any of the matters set forth in
subparagraphs  (a)-(j) of Item 4 of Schedule 13D. The Reporting Persons have not
entered into any agreement  with any third party to act together for the purpose
of acquiring,  holding,  voting or disposing of the Shares reported herein.  The
Reporting  Persons  intend  to  review  their  investment  in the  Company  on a
continuing  basis  and  may  from  time  to  time  engage  in  discussions  with
management,  the Board of Directors, other shareholders of the Company and other
relevant parties, including representatives of any of the foregoing,  concerning
matters  with  respect  to the  Reporting  Person's  investment  in the  Shares,
including, without




CUSIP No. 009363102                 13D                  Page 9 of 14 Pages


limitation,  the  business,  operations,  governance,  management,  strategy and
future plans of the Company.  Depending on various factors,  including,  without
limitation,  the  terms of the  Proposed  Acquisition  and any  other  offers or
developments related thereto,  the outcome of any discussions  referenced above,
the Company's financial position and strategic  direction,  actions taken by the
Board of Directors,  price levels of the Shares, other investment  opportunities
available to the  Reporting  Persons,  conditions in the  securities  market and
general  economic  and industry  conditions,  the  Reporting  Persons may in the
future take such actions with respect to their investment in the Company as they
deem appropriate, including, without limitation, purchasing additional Shares or
selling some or all of their Shares, engaging in hedging or similar transactions
with  respect to the Shares  and/or  otherwise  changing  their  intention  with
respect to any and all matters referred to in Item 4 of Schedule 13D.


 Item 5.     Interest in Securities of the Issuer.

      A. Eton Park Fund, L.P.

               (a)  As of the date hereof,  EP Fund may be deemed the beneficial
                    owner of 2,104,970 Shares.

                    Percentage:  Approximately  2.54% as of the date hereof. The
                    percentages  used herein and in the rest of the Schedule 13D
                    are calculated  based upon  82,729,623  Shares  outstanding,
                    which  reflects  the  number  of Shares  outstanding,  as of
                    February 3, 2010,  as reported  in the  Company's  Quarterly
                    Report on Form 10-Q filed on February 8, 2010.

               (b) 1. Sole power to vote or direct vote: 0
                   2. Shared power to vote or direct vote: 2,104,970 Shares
                   3. Sole power to dispose or direct the disposition: 0
                   4. Shared power to dispose or direct the disposition:
                      2,104,970 Shares

               (c)  The transactions in the Shares within the last sixty days by
                    EP Fund, which were all in the open market, are set forth in
                    Schedule B, and are incorporated herein by reference.

               (d)  No person other than the Reporting  Persons is known to have
                    the right to receive,  or the power to direct the receipt of
                    dividends from, or proceeds from the sale of, such Shares.

               (e)  Not applicable.

     B.  Eton Park Master Fund, Ltd.

               (a)  As of the date  hereof,  EP Master  Fund may be  deemed  the
                    beneficial owner of 3,909,230 Shares.

                    Percentage: Approximately 4.73% as of the date hereof.

               (b) 1. Sole power to vote or direct vote: 0



CUSIP No. 009363102                 13D                  Page 10 of 14 Pages


                   2. Shared power to vote or direct vote: 3,909,230 Shares
                   3. Sole power to dispose or direct the disposition: 0
                   4. Shared power to dispose or direct the disposition:
                      3,909,230 Shares

               (c)  The transactions in the Shares within the last sixty days by
                    EP Master Fund,  which were all in the open market,  are set
                    forth  in  Schedule  B,  and  are  incorporated   herein  by
                    reference.

               (d)  No person other than the Reporting  Persons is known to have
                    the right to receive,  or the power to direct the receipt of
                    dividends from, or proceeds from the sale of, such Shares.

               (e)  Not applicable.

     C. Eton Park Associates, L.P.

               (a)  As of the date hereof,  EP Associates as the general partner
                    of EP  Fund  may  be  deemed  the  beneficial  owner  of the
                    2,104,970 Shares held by EP Fund.

                    Percentage: Approximately 2.54% as of the date hereof.

               (b) 1. Sole power to vote or direct vote: 0
                   2. Shared power to vote or direct vote: 2,104,970 Shares
                   3. Sole power to dispose or direct the disposition: 0
                   4. Shared power to dispose or direct the
                      disposition:  2,104,970 Shares

               (c)  See Schedule B.

               (d)  No person other than the Reporting  Persons is known to have
                    the right to receive,  or the power to direct the receipt of
                    dividends from, or proceeds from the sale of, such Shares.

               (e)  Not applicable.

     D. Eton Park Capital Management, L.P.

               (a)  As of the date hereof, EP Management,  (i) as the investment
                    manager of EP Fund may be deemed the beneficial owner of the
                    2,104,970  Shares held by EP Fund and (ii) as the investment
                    manager of EP Master Fund may be deemed the beneficial owner
                    of the  3,909,230  Shares held by EP Master Fund for a total
                    of 6,014,200 Shares.

                    Percentage: Approximately 7.27% as of the date hereof.

               (b) 1. Sole power to vote or direct vote: 0
                   2. Shared power to vote or direct vote: 6,014,200 Shares
                   3. Sole power to dispose or direct the disposition: 0
                   4. Shared power to dispose or direct the disposition:
                      6,014,200 Shares



CUSIP No. 009363102                 13D                  Page 11 of 14 Pages


               (c)  See Schedule B.

               (d)  No person other than the Reporting  Persons is known to have
                    the right to receive,  or the power to direct the receipt of
                    dividends from, or proceeds from the sale of, such Shares.

               (e)  Not applicable.

     E. Eric M. Mindich

               (a)  As of the date  hereof,  Mr.  Mindich,  (i) as the  managing
                    member of Eton Park Associates,  L.L.C., the general partner
                    of EP Associates,  may be deemed the beneficial owner of the
                    2,104,970  Shares  held by EP Fund and (ii) as the  managing
                    member of Eton Park Capital Management,  L.L.C., the general
                    partner of EP Management, may be deemed the beneficial owner
                    of the  2,104,970  shares held by EP Fund and the  3,909,230
                    Shares  held by EP  Master  Fund  for a total  of  6,014,200
                    Shares.

                    Percentage: Approximately 7.27% as of the date hereof.

               (b) 1. Sole power to vote or direct vote: 0
                   2. Shared power to vote or direct vote: 6,014,200 Shares
                   3. Sole power to dispose or direct the disposition: 0
                   4. Shared power to dispose or direct the disposition:
                      6,014,200 Shares

               (c)  See Schedule B.

               (d)  No person other than the Reporting  Persons is known to have
                    the right to receive,  or the power to direct the receipt of
                    dividends from, or proceeds from the sale of, such Shares.

               (e)  Not applicable.

Item 6.     Contracts, Arrangements, Understandings or
            Relationships with Respect to Securities of the Issuer.

     Other than the Joint Acquistion  Statement attached as Exhibit 1 hereto and
the Power of  Attorney  attached  as Exhibit 2 hereto,  there are no  contracts,
arrangements,  understandings  or  relationships  (legal or otherwise) among the
persons  named in Item 2 hereof and  between  such  persons  and any person with
respect to any securities of the Company,  including but not limited to transfer
or voting of any other securities, finder's fees, joint ventures, loan or option
arrangements,  puts or calls,  guarantees  of profits,  divisions  of profits or
loss, or the giving or withholding of proxies.

Item 7.     Materials to be Filed as Exhibits.

Exhibit 1: Joint Acquisition Statement as required by Rule 13d-1(k)(1) under the
Act.

Exhibit 2: Power of Attorney




CUSIP No. 009363102                 13D                  Page 12 of 14 Pages


                                   SIGNATURES

After  reasonable  inquiry  and to the best of our  knowledge  and  belief,  the
undersigned certify that the information set forth in this Schedule 13d is true,
complete and correct.


DATED:  May 28, 2010

                              ERIC M.  MINDICH,  individually,  and as  managing
                              member of: (i) Eton Park  Associates,  L.L.C.,  as
                              general partner of Eton Park Associates, L.P., (a)
                              for itself and (b) as general partner of Eton Park
                              Fund, L.P.; and (ii) Eton Park Capital Management,
                              L.L.C.,  as general  partner of Eton Park  Capital
                              Management,  L.P.,  (a)  for  itself  and  (b)  as
                              investment  adviser  of Eton Park Fund,  L.P.  and
                              Eton Park Master Fund, Ltd.

                              By:  /s/ Marcy Engel
                                   --------------------------
                                   Name:  Marcy Engel*
                                   Title:  Attorney-in-Fact



* Pursuant to a Power of Attorney dated August 17, 2007 attached hereto as
Exhibit 2.







CUSIP No. 009363102                 13D                 Page 13 of 14 Pages

                                   Schedule A

GENERAL PARTNERS,  CONTROL PERSONS,  DIRECTORS AND EXECUTIVE OFFICERS OF
                           CERTAIN REPORTING PERSONS

          The  following  sets  forth the  name,  position,  address,  principal
occupation and citizenship of each general  partner,  control  person,  director
and/or executive officer of the applicable Reporting Persons (the "Instruction C
Persons").  To the best of the  Reporting  Persons'  knowledge,  (i) none of the
Instruction  C Persons  during  the last  five  years  has been  convicted  in a
criminal proceeding (excluding traffic violations or other similar misdemeanors)
or been a party to a civil  proceeding of a judicial or  administrative  body of
competent jurisdiction and as a result of such proceeding was or is subject to a
judgment,  decree or final order enjoining future  violations of, or prohibiting
or mandating  activities subject to, federal or state securities laws or finding
any  violation  with  respect  to such laws and (ii) none of the  Instruction  C
Persons  owns any  Shares  or is party to any  contract  or  agreement  as would
require disclosure in this Schedule 13D.

REPORTING PERSON:  ETON PARK MASTER FUND, LTD.
Richard E. Douglas serves as director of EP Master Fund. His business address is
Windward 1, Regatta Office Park,  West Bay Road,  Grand Cayman,  Cayman Islands.
His principal  occupation is serving as a Senior  Partner of Rawlinson & Hunter.
Richard E. Douglas is a citizen of the United Kingdom.

Marcy Engel  serves as director of EP Master Fund.  Her business  address is 399
Park Avenue,  10th Floor, New York, New York 10022. Her principal  occupation is
serving as Chief Operating  Officer and General Counsel of EP Management.  Marcy
Engel is a citizen of the United States of America.

William Keunen serves as director of EP Master Fund. His business address is 701
Brickell Ave,  Suite 2600,  Miami,  Florida 33131.  His principal  occupation is
serving as a director of Citco Fund Services. William Keunen is a citizen of the
United Kingdom.


REPORTING PERSON:  ETON PARK CAPITAL MANAGEMENT, L.P.
Eton Park  Capital  Management,  L.L.C.  serves  as the  general  partner  of EP
Management. The address of Eton Park Capital Management, L.L.C. is 399 Park Ave,
10th  Floor,  NY,  NY  10022.  The  principal  business  of  Eton  Park  Capital
Management,  L.L.C.  is to serve as the general  partner of EP Management.  Eton
Park Capital  Management,  L.L.C. is a limited liability company organized under
the laws of the State of Delaware.  Mr.  Mindich is the managing  member of Eton
Park Capital Management, L.L.C.


REPORTING PERSON:  ETON PARK ASSOCIATES, L.P.
Eton Park Associates, L.L.C. serves as the general partner of EP Associates. The
address of Eton Park  Associates,  L.L.C.  is 399 Park Ave,  10th Floor,  NY, NY
10022. The principal business of Eton Park Associates, L.L.C. is to serve as the
general  partner of EP Associates.  Eton Park  Associates,  L.L.C.  is a limited
liability company organized under the laws of the State of Delaware. Mr. Mindich
is the managing member of Eton Park Associates, L.L.C.






CUSIP No. 009363102                 13D                  Page 14 of 14 Pages

                                  Schedule B

     This Schedule sets forth information with respect to each purchase and sale
of Shares which were  effectuated  by a Reporting  Person  during the past sixty
days. All transactions were effectuated in the open market through a broker. The
amounts  reported  in the  "Weighted  Average  Price"  column in the table below
reflect a weighted  average price for the Shares  purchased or sold.  The Shares
were purchased or sold, as applicable, in multiple transactions, each at a price
within  the range of prices  set forth in the  "Range of  Prices"  column in the
table below.  The Reporting  Persons shall  undertake to provide to the staff of
the Securities and Exchange Commission, upon request, full information regarding
the  number of Shares  purchased  or sold,  as  applicable,  within the range of
prices set forth in the table below.

ETON PARK FUND, L.P.

Trade Date     Shared Purchased          Weighted Average    Range of Prices
               (Sold)                    Price ($)*          ($)*
3/26/2010      3,500                     64.0006             63.88-64.08
3/29/2010      35,000                    63.9988             63.99-64.00
4/20/2010      35,000                    63.8709             63.83-63.90
4/22/2010      17,500                    63.5518             63.42-63.65
5/21/2010      78,120                    61.1067             60.65-61.30
5/21/2010      105,000                   61.2127             60.045-61.57
5/24/2010      197,750                   61.9678             61.58-62.1
5/25/2010      280,000                   61.2396             60.85-62.14
5/26/2010      23,100                    62.0047             61.97-62.54


ETON PARK MASTER FUND, LTD.

Trade Date     Shared Purchased       Weighted Average Price    Range of Prices
               (Sold)                 ($)*                      ($)*
3/26/2010      6,500                  64.0006                   63.88-64.08
3/29/2010      65,000                 63.9988                   63.99-64.00
4/20/2010      65,000                 63.8709                   63.83-63.90
4/22/2010      32,500                 63.5518                   63.42-63.65
5/21/2010      145,080                61.1067                   60.65-61.30
5/21/2010      195,000                61.2127                   60.045-61.57
5/24/2010      367,250                61.9678                   61.58-62.1
5/25/2010      520,000                61.2396                   60.85-62.14
5/26/2010      42,900                 62.0047                   61.97-62.54

*        Excluding commissions.







                                    EXHIBIT 1

                           JOINT ACQUISITION STATEMENT
                            PURSUANT TO RULE 13d-1(k)


     The  undersigned  acknowledge  and agree that the  foregoing  statement  on
Schedule  13D,  is  filed  on  behalf  of each of the  undersigned  and that all
subsequent  amendments  to this  statement  on Schedule  13D,  shall be filed on
behalf of each of the  undersigned  without the  necessity of filing  additional
joint  acquisition  statements.  The undersigned  acknowledge that each shall be
responsible  for the filing of such  amendments,  and for the  completeness  and
accuracy of the information  concerning him or it contained  therein,  but shall
not be  responsible  for  the  completeness  and  accuracy  of  the  information
concerning the others, except to the extent that he or it knows or has reason to
believe that such information is inaccurate.

Dated:  May 28, 2010

                              ERIC M.  MINDICH,  individually,  and as  managing
                              member of: (i) Eton Park  Associates,  L.L.C.,  as
                              general partner of Eton Park Associates, L.P., (a)
                              for itself and (b) as general partner of Eton Park
                              Fund, L.P.; and (ii) Eton Park Capital Management,
                              L.L.C.,  as general  partner of Eton Park  Capital
                              Management,  L.P.,  (a)  for  itself  and  (b)  as
                              investment  adviser  of Eton Park Fund,  L.P.  and
                              Eton Park Master Fund, Ltd.

                              By: /s/ Marcy Engel
                                  --------------------------
                                  Name:  Marcy Engel*
                                  Title:  Attorney-in-Fact








* Pursuant to a Power of Attorney dated as of August 17, 2007 attached hereto as
Exhibit 2.









                                    EXHIBIT 2

                                POWER OF ATTORNEY


KNOW ALL MEN BY THESE PRESENTS, that I, ERIC M. MINDICH, hereby make, constitute
and appoint MARCY ENGEL, acting  individually,  as my agent and attorney-in-fact
for the purpose of executing in my name,  (a) in my personal  capacity or (b) in
my capacity as Managing Member,  member of or in other capacities with Eton Park
Capital  Management,  L.L.C.,  Eton Park  Associates,  L.L.C.  and each of their
affiliates  or  entities  under  my  control,  all  documents  relating  to  the
beneficial  ownership of securities  required to be filed with the United States
Securities  and  Exchange  Commission  (the "SEC")  pursuant  to Section  13(d),
Section  13(g) or  Section  16(a) of the  Securities  Exchange  Act of 1934 (the
"Act").

All past acts of the  attorneys-in-fact  in  furtherance  of the  foregoing  are
hereby ratified and confirmed.

This power of attorney shall be valid from the date hereof until revoked by me.

IN  WITNESS  WHEREOF,  I have  executed  this  instrument  as of the 17th day of
August, 2007.


/s/ Eric M. Mindich
--------------------------
Eric M. Mindich