FINAL MISSION MH-53 Pave Low helicopters prepare to take off for their final combat mission on Sept. 27, 2008, in Iraq. The MH-53, the largest and most technologically advanced helicopter in the Air Force with a record dating back to the Vietnam War, was retired from the Air Force inventory on Sept. 30, 2008. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 607947-X-NJS39-127.jpg Photo Gallery