Lt. Col. Richard Sutton, Defense Threat Reduction Agency mission commander, side-swims while pulling a classmate during Water Survival Training at Prince George’s Community College’s Robert I. Bickford Natatorium in Largo, Md., Oct. 27, 2016. The side-swim technique is used when pulling another individual who might be hurt or unconscious to make swimming easier. (U.S. Air Force photo by Senior Airman Philip Bryant)