U.S. Air Force Lt. Col. Jeff Hawkins, 94th Fighter Squadron commander, conducts a pre-flight check of an F-22 Raptor at Langley Air Force Base, Va., Oct. 16, 2014. Pre-flight checks are conducted to ensure the structural integrity of the aircraft prior to flight. (U.S. Air Force photo by Air man 1st Class Areca T. Wilson/Released)