4/8/2013 - U.S. Air Force Capt. Taylor Petty gets strapped in by Tech. Sgt. Robert Berg prior to a sortie, April 8, 2013, Barksdale Air Force Base, La. This sortie marks the last time Berg will strap a pilot into his aircraft, an A-10 Thunderbolt II, since it is among the first three aircraft selected to leave Barksdale in preparation of the inactivation of the 917th Fighter Group. (U.S. Air Force photo by Master Sgt. Greg Steele/Released)

4/8/2013 - Names of past crew chiefs are written in the wheel well of a 917th Fighter Group A-10 Thunderbolt II prior to it leaving Barksdale Air Force Base, La., for Davis-Monthan AFB, Ariz., April 8, 2013. The aircraft will be retired from active service and is among the first three A-10s selected to leave Barksdale in preparation for the inactivation of the FG. (U.S. Air Force photo by Master Sgt. Greg Steele/Released)

4/8/2013 - U.S. Air Force Taylor Petty, 47th Fighter Squadron pilot, prepares an A-10 Thunderbolt II for its last sortie from Barksdale Air Force Base, La., April 8, 2013. This A-10 is among the first three selected to leave Barksdale in preparation for the inactivation of the 917th Fighter Group. (U.S. Air Force photo by Master Sgt. Greg Steele/Released)

4/8/2013 - U.S. Air Force Capt. Simon Long, 47th Fighter Squadron pilot, prepares to taxi for a sortie, April 8, 2013, Barksdale Air Force Base, La. The A-10 Thunderbolt II piloted by Long is among the first three selected to permanently leave Barksdale in preparation of the inactivation of the 917th Fighter Group. (U.S. Air Force photo by Master Sgt. Greg Steele/Released)

4/8/2013 - A 917th Fighter Group A-10 Thunderbolt II flown by U.S. Air Force Capt. Simon Long, prepares to leave on a sortie which it will never return from, April 8, 2013, Barksdale Air Force Base, La. The FG is scheduled to be inactivated in September 2013, and this A-10 is among the first three selected to leave Barksdale. (U.S. Air Force photo by Master Sgt. Greg Steele/Released)

4/8/2013 - U.S. Air Force Tech. Sgt. Robert Berg marshals his A-10 Thunderbolt II for the last time, April 8, 2013, Barksdale Air Force Base, La. Berg has been the crewchief of this aircraft for two years and it among the first three selected to leave the base in preparation of the inactivation of the 917th Fighter Group. (U.S. Air Force photo by Master Sgt. Greg Steele/Released)

4/8/2013 - A 917th Fighter Group A-10 Thunderbolt II takes off for the last time from Barksdale Air Force Base, La., April 8, 2013. The FG is scheduled to be inactivated by Sept. 30, 2013, with the first three A-10s departing Barksdale. (U.S. Air Force photo by Master Sgt. Greg Steele/Released)