LANGLEY AIR FORCE BASE, Va. -- Tech. Sgt. James Carmen, 633d Security Forces Squadron military working dog trainer, holds live TNT which Uudensi, 633 SFS bomb and patrol military working dog, must detect during Military Working Dog training, which is divided into patrol and explosive training sessions Feb. 26. Patrol training consists of attack work, building searches, gunfire, obedience, and filed or area searches; explosive training consists of barracks, warehouse, theater, vehicle, luggage, aircraft, and open area or field searches. (U.S. Air Force photo/Senior Airman Zachary Wolf)