180531-M-MR595-1159 PACIFIC OCEAN (May 31, 2018) Marines with Battalion Landing Team 3/1, 13th Marine Expeditionary Unit (13th MEU), lower a blown assault amphibious vehicle (AAV) pack from an AAV while at sea aboard the Whidbey Island-class dock landing ship USS Rushmore (LSD 47), May 31, 2018. The Essex Amphibious Ready Group (ARG) and 13th MEU are conducting Composite Training Unit Exercise (COMPTUEX), the final exercise before the units’ upcoming deployment. This exercise validates the ARG/MEU team’s ability to adapt and execute missions in ever-changing, unknown environments. Upon completion of COMPTUEX, the 13th MEU and Essex ARG will be certified as the nation’s premier forward-deployed, crisis response force, capable of executing missions across the broad spectrum of military operations. (U.S. Marine Corps photo by Cpl. Danny Gonzalez/Released)