U.S. Air Force Airman Dylan Coady, 633rd Security Forces Squadron installation entry controller, fires paint rounds out of an M-4 carbine during emergency service team tryouts at Langley Air Force Base, Va., Jan. 20, 2015. Air Force EST’s are similar to special weapons and tactics teams as they may be called on to handle high-risk situations on installations. (U.S. Air Force photo by Senior Airman Kayla Newman/Released)

U.S. Air Force Tech. Sgt. Franklin Mosley, 633rd Security Forces Squadron trainer, instructs Airman Dylan Coady, 633rd SFS installation entry controller, on firing the M-4 carbine during emergency service team tryouts at Langley Air Force Base, Va., Jan. 20, 2015. The EST is a specialized element within 633rd SFS that deals with specialized threats at Air Force installations. (U.S. Air Force photo by Senior Airman Kayla Newman/Released)

U.S. Air Force Airman 1st Class Edgar Roque, 633rd Security Forces Squadron installation entry controller, drags a dummy during emergency service team tryouts at Langley Air Force Base, Va., Jan. 20, 2015. During the tryouts, Airmen were required to complete an obstacle course containing a 400-meter timed run, low-crawl, bear-crawl, ammunition can press and fire an M-4 carbine and M-9 pistol at a target. (U.S. Air Force photo by Senior Airman Kayla Newman/Released)

U.S. Air Force Staff Sgt. Joan Morgan, 633rd Security Forces Squadron installation entry controller, presses an ammunition can during emergency service team tryouts at Langley Air Force Base, Va., Jan. 20, 2015. SFS Airmen were required to lift a 30-pound ammunition can above their head a minimum of 50 times as one of the tasks during the tryouts. (U.S. Air Force photo by Senior Airman Kayla Newman/Released)

U.S. Air Force Airman 1st Class Michael Viola, 633rd Security Forces Squadron installation entry controller, fires an M-9 pistol at a target during emergency service team tryouts at Langley Air Force Base, Va., Jan. 20, 2015. Viola and other members of SFS ran a timed obstacle course in an effort to qualify to be a part of the specialized team. (U.S. Air Force photo by Senior Airman Kayla Newman/Released)

U.S. Air Force Staff Sgt. Ryan Gulley, 633rd Security Forces Squadron trainer, shouts words of encouragement to Airman Dylan Coady, 633rd SFS installation entry controller, during emergency service team tryouts at Langley Air Force Base, Va., Jan. 20, 2015. During day one of the tryouts, SFS Airmen raced against the clock to finish an obstacle course designed to test their first responder capabilities. (U.S. Air Force photo by Senior Airman Kayla Newman/Released)