Senior Airman Thomas Hill, a 28th Civil Engineer Squadron fire fighter, left, practices rescuing a drowning person during a water rescue training session in the base lakes on Ellsworth Air Force Base, S.D., July 31, 2018. When firefighters are called out to a water rescue, they must ensure they wear the proper personal floatation device. (U.S. Air Force photo by Senior Airman Denise M. Jenson)