U.S. Air Force Maj. Marcus Walker, 34th Weapons Squadron advanced instructor, completes the pre-inspection on an HH-60W helicopter before a training mission on March 21, 2021, at Nellis Air Force Base, Nevada. The U.S. Air Force Weapons School trains tactical experts and leaders to control and exploit air, space and cyber on behalf of the joint force. Every six months, the Weapons School graduates approximately 150 Weapons Officers and enlisted tacticians who are system experts, Weapons Instructors, Advanced Instructors, and leaders of Airmen. (U.S. Air Force photo by Master Sgt. Alexandre Montes)