Staff Sgt. Matthew Eichner, 28th Security Forces Squadron response force leader, signals his squad members to move forward during a Shoot, Move, Communicate training at Ellsworth Air Force Base, S.D., Sept. 29, 2015. Security Forces members participated in a simulated sweep of a hostile area where they engaged and neutralized enemy forces. (U.S. Air Force photo by Airman 1st Class James L. Miller/Released)