171116-M-DL117-0228 ATLANTIC OCEAN (Nov. 16, 2017) Marines assigned to Maritime Raid Force (MRF), 26th Marine Expeditionary Unit (26 MEU), return from the training support vessel USNS Prevail (TSV 1) during a combined composite unit training exercise (COMTUEX) in the Atlantic Ocean. COMPTUEX is the final certifying exercise for the 26th Marine Expeditionary Unit and the Iwo Jima Amphibious Readiness Group before they deploy. (U.S. Marine Corps photo by Cpl. Juan A. Soto-Delgado/Released)