U.S. Marine Corps Lance Cpl. Adam Gentilin provides security while manning a M2 .50-caliber Browning machine gun in the Jungle Warfare Training Area, Okinawa, Japan, Oct. 31, 2015, as part of an air assault during Blue Chromite 2016. Gentilin is a machine gunner assigned to the 2nd Marine Division's 1st Battalion, 2nd Marine Regiment, 3rd Marine Expeditionary Force. U.S. Marine Corps photo by Cpl. Drew Tech