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)