U.S. Army Soldiers assigned to the 203rd Transportation Detachment participate in vessel defense pre-deployment training at Fort Eustis, Va., Aug. 3, 2016. The vessel defense simulator has two M2 .50 cal machine guns and two MK19 40 mm grenade launchers which allowed the unit to practice communication and shooting hostile targets. (U.S. Air Force photo by Airman 1st Class Derek Seifert)