This excerpt taken from the MRO 10-Q filed Aug 7, 2007.
6. Termination of Employment due to Mandatory Retirement. In the event of the Mandatory Retirement of the Participant on or after July 1, 2008, the Participants Performance Units may be considered for vesting following the close of the 2007-2009 Performance Cycle. At the discretion of the Committee, the Participant may vest in and be entitled to receive a cash payment equal to the product of (i) the percentage equal to the days of Participants Employment during the 2007-2009 Performance Cycle divided by the total days in the 2007-2009 Performance Cycle, (ii) the number of Performance Units granted hereunder, and (iii) the Payout Value. Such cash payment shall be made as soon as administratively feasible following the Committees determination under Paragraph 2 and, in any event, during the calendar year following the close of the 2007-2009 Performance Cycle. If, in accordance with the Committees determination under Paragraph 2, the Payout Value is zero, the Participant shall immediately forfeit any and all rights to the Performance Units. Upon the vesting and/or forfeiture of the Performance Units pursuant to this Paragraph 6 and the making of the related cash payment, if any, the rights of the Participant and the obligations of the Corporation under this Award Agreement shall be satisfied in full. The death of the Participant following Mandatory Retirement but prior to the close of the 2007-2009 Performance Cycle shall have no effect on this Paragraph 6.