200131-M-SS016-002 MARINE CORPS BASE HAWAII (Jan. 31, 2020) An Iver3-580 unmanned underwater vehicle floats in the water during the first day of evaluation at Marine Corps Base Hawaii (MCBH), Jan. 31, 2020. Personnel with Marine Corps Systems Command (MCSC) came to MCBH to test out an unmanned underwater vehicle to evaluate its hydrographic survey capability. MCBH’s unique location and available training areas enables MCSC to conduct the evaluation from one location. (U.S. Marine Corps photo by Lance Cpl. Samantha Sanchez/Released)