Airmen from across Air Force Global Strike Command attend a response force tactical course and receive a demonstration on M84 flashbangs Mar. 27, 2019, at the 90th Ground Combat Training Squadron, Camp Guernsey, Wyo. The response force tactical course is a five-day intensive program to teach Airmen how to infiltrate a building safe, sure and lethal when directed during active shooter scenarios. (U.S. Air Force photo by Senior Airman Abbigayle Williams)