Airborne Burpee Marines do burpees, which work the entire body, during a physical fitness and weapons knowledge test on the USS San Antonio in the Gulf of Aden, Aug. 30, 2016. The Marines, assigned to the 22nd Marine Expeditionary Unit, are maintaining regional security in the U.S. 5th Fleet area of operations. Marine Corps photo by Sgt. Ryan Young SHARE: Download: Full Size (0.6 MB) Credit: Sgt. Ryan Young VIRIN: 160830-M-KK554-093A.JPG Photo Gallery