Senior Airman Alexander Keskinen, explosive ordnance disposal technician, 315th Civil Engineer Flight, Joint Base Charleston, S.C, alerts other members of the 315th CEF that the controlled explosion is about to detonate June 27, 2020, here. “Fire in the hole” is typically the phrase shouted by the designated member to let everyone know the controlled explosion is about to commence. (U.S. Air Force photo by Senior Airman William Brugge)