MWD
U.S. Air Force Staff Sgt. Jessie Johnson, 3rd Infantry Division military working dog handler, and her dog, Chrach, rest after successfully completing explosives detection training, at Forward Operation Base Pasab, Afghanistan, April 24, 2013. Chrach is trained to detect the odor of explosives. Johnson, a native of Reading, Pa., has been a MWD handler for four years and is deployed from Luke Air Force Base, Ariz. (U.S. Air Force photo/Staff Sgt. Marleah Miller)