Two KC-135 Stratotankers, from the 96th Air Refueling Squadron, take off during the squadron’s final operational mission on Joint Base Pearl Harbor-Hickam, Hawaii, June 11, 2015. Four KC-135 operated together to executed refueling operations on six F-22 Raptors, from the 199th Fighter Squadron, and accomplished defensive maneuvering as a four ship during the historical flight. (U.S. Air Force Photo by Tech Sgt. Aaron Oelrich/Released)