U.S. Air Force Airmen and U.S. Army Soldiers attempt a waterborne infiltration during exercise Operation Resolute Endeavor II at Joint Base Langley-Eustis, Va., Dec. 5, 2016. Airmen and Soldiers played the role of attackers who used different tactics to gain access to Third Port which was defended by 633rd Security Forces Squadron Airmen. (U.S. Air Force photo by Airman 1st Class Derek Seifert)