Staff Sgt. Tyler Dyer, 47th Security Forces Squadron investigator, negotiates a simulated hostage situation during an active shooter training at Laughlin Air Force Base, Texas, July 22, 2019. The response and negotiation portion of the exercise lasted for nearly two hours and was aimed at bolstering crisis readiness and response capabilities. (U.S. Air Force photo by Staff Sgt. Benjamin N. Valmoja)