151209-N-VS214-068 PACIFIC OCEAN (Dec. 09, 2015) A landing craft utility (LCU) from Assault Craft Unit ONE backs out of the well deck of dock landing ship USS Harpers Ferry (LSD 49). The Boxer Amphibious Ready Group (ARG) is underway off the coast of Southern California completing a certification exercise (CERTEX). CERTEX is the final evaluation of the 13th Marine Expeditionary Unit (13th MEU) and Boxer ARG prior to deployment and is intended to certify their readiness to conduct integrated missions across the full spectrum of military operations. (U.S. Navy photo by Mass Communications Specialist 3rd Class Zachary Eshleman/Released)