U.S. Marines from Battalion Landing Team (BLT), 3rd Battalion, 5th Marine, 15th Marine Expeditionary Unit (MEU) conduct a rehearsal of concept (ROC) drill aboard the USS Peleliu prior to the execution of an island seizure training exercise, July 24, 2012. This training is part of the Composite Unit Training Exercise (COMPTUEX) to certify the Peleliu Amphibious Ready Group (PELARG) for WESTPAC 12-2. (U.S. Marine Corps photo by Gunnery Sgt. John A. Lee, II/Released)