Lt. Col. Kevin Gordon, 64th Aggressor Squadron director of operations, explains the functions of life support equipment modeled by Austin Fitzgerald, a survivor of childhood cancer, at the 64th AGRS briefing room June 8, 2013, at Nellis Air Force Base, Nev. The visit was hosted by the pilots of the 64th AGRS with help from the 65th AGRS, the 547th Intelligence Squadron, the United States Air Force Air Demonstration Squadron, The Thunderbirds, and the 99th Civil engineer squadron for the Candlelighters Childhood Cancer Foundation of Nevada. (U.S. Air Force Photo by Staff Sgt. Gregory Brook)