Staff Sgt. Brian McKinley, right, 51st Civil Engineer Squadron fire department crew chief, holds the cervical spine of Staff Sgt. Dennis Middleton, 51st Communication Squadron project manager, during a mass casualty scenario of exercise Beverly Herd 17-3 at Osan Air Base, Republic of Korea September 18, 2017. As part of the First Response Team, McKinley arrived before medical personnel and administered first-aid to injured victims. (U.S. Air Force photo by Tech Sgt. Ashley Tyler/Released)