Staff Sgt. Daniel Vehslage, 54th Helicopter Squadron special missions aviator, secures a flotation device during underwater egress survival training at Minot Air Force Base, N.D., June 22, 2017. During the training, the 54th HS Airmen learned how to escape a simulated helicopter crash and properly use common rescue devices. (U.S. Air Force photo by Airman 1st Class Jonathan McElderry)