An F-22 Raptor fighter jet, assigned to the 433rd Weapons Squadron, at Nellis Air Force Base, flies to meet a KC-135 Stratotanker cargo aircraft assigned to the 509th Weapons Squadron, Fairchild Air Force Base, Washington, boom for aerial refueling over the Nevada Test and Training Range, Nev., July 10, 2017. The United States Air Force Weapons School teaches graduate-level instructor courses that provide the world's most advanced training in weapons and tactics employment to officers of the combat air forces and mobility air forces. (U.S. Air Force photo by Senior Airman Kevin Tanenbaum/Released)