U.S. Marine Corps Lance Cpl. Zackary McLimans, a Machine Gunner assigned to 3d Battalion, 3d Marine Regiment, prepares to submerge for Underwater Egress Training (UET) during Exercise Bougainville I on Marine Corps Base Hawaii, Kaneohe Bay, Aug. 28, 2018. Bougainville I is the first phase of the pre-deployment training cycle for the battalion and is an exercise focused on building small-unit skills to increase proficiency in combat. (U.S. Marine Corps photo by Sgt. Ricky Gomez)

- Image ID: PJ5W8D