Lance Cpl. Nicholas Tate, an artilleryman with Battery F, 2nd Battalion, 14th Marines, 4th Marine Division, Marine Forces Reserve, performs simulated corrective actions on a M2 .50-caliber machine gun during his annual training at Fort Sill in Lawton, Okla., June 3, 2016. To maintain a high level of readiness, the Marine Corps Reserve conducts annual training to ensure Marines remain proficient in their jobs as well as gain experience in other areas.