Senior Airmen Chelsea Castleberry and Megan Hartley, members of the 445th Civil Engineer Squadron’s readiness and emergency management flight, apply personal threat indicators during training June 25, 2020. During the training, Airmen planned routes and determined the best locations to place indicators of airborne threats while maintaining an alert and defensive posture which required them to wear mission-oriented protective posture (MOPP) gear. (U.S. Air Force photo/Staff Sgt. Ethan Spickler)