180310-M-MI959-002.JPG - U.S. Marine Pfc. Angel Reveles fires on enemy targets at the Ulupau Range Training Facility on Marine Corps Base Hawaii, March 10, 2018. Bougainville I is used to train Marines to fight at the small-unit level and build their proficiency for future deployments. (U.S. Marine Corps photo by Pfc. Trevor Rowett)