This excerpt taken from the MRO 10-Q filed Aug 7, 2007.
7. Vesting Upon a Change of Control. Notwithstanding anything herein to the contrary, upon the occurrence of a Change in Control prior to the end of the 2007-2009 Performance Cycle, the Participants right to receive the Performance Units, unless previously forfeited pursuant to Paragraph 4, shall vest in full and the Payout Percentage shall be 100%. A cash payment equal to the vested value of the Performance Units shall be made in accordance with Paragraph 3 on the first day of the third month following the Change in Control. Such vesting shall satisfy the rights of the Participant and the obligations of the Corporation under this Award Agreement in full.