Left, Senior Airman Cassie Castillo, 21, from Riverside, Calif., and Staff Sgt. Jeffrey Fay, 29, of Palisade, Colo., both members of Air Force Alpha 6, lead a team in learning how to enter and clear a building during recent training at Fort Dix. The building they trained in is called a glass house because trainers can see how trainees are performing. (U.S. Army photo/Lisa Evans)