U.S. Air Force Tech. Sgt. David Noriega, 7th Operations Support Squadron Survival Evasion Resistance Escape specialist, covers his face with camouflage paint during a combat survival course training, Feb. 18, 2016, in Abilene, Texas. Noriega used this tactic to show aircrew students the significance of blending in with the environment in attempts to evade and avoid capture in enemy territory. (U.S. Air Force photo by Airman 1st Class Katherine Miller/Released)