The Fort Hood Special Reaction Team practices room clearing using a chalk floor plan drawn in the street during their quarterly certification taking place in Chaffee Village, Fort Hood, Texas, Dec. 13, 2013. By replicating the floor plan of the house they are to breach, the SRT is able to coordinate their movements and maximize their chances for success. (U.S. Army Photo by Sgt. John Healy, 7th Mobile Public Affairs Detachment)