A U.S. Marine M1A1 Abrams tank with 1st Battalion, 4th Marines, Camp Pendleton, Calif., maneuvers while participating in a mechanized assault course Feb. 4, 2015, during Integrated Training Exercise 2-15 at Twentynine Palms Marine Corps Air Ground Combat Center (MCAGCC), Calif. MCAGCC conducts relevant live-fire combined arms training, urban operations, and Joint/Coalition level integration training that promotes operational forces readiness. (U.S. Air Force photo by Master Sgt. Donald R. Allen/Released)