Airmen 1st Class Justin Coleman, Ryan Countryman, and Bobby Potts, and Staff Sgt. Richard Halter, all 60th Civil Engineer Squadron explosive ordnance disposal technicians, participate in a training scenario at Travis Air Force Base, Calif., April 17, 2017. EOD techs conduct training on various threats to ensure they are prepared for deployment. (U.S. Air Force photo/Staff Sgt. Daniel Phelps)