U.S. Marine Corps Humvee from the 3rd Battalion, 8th Marines Regiment, Camp Lejeune, N.C., advances during the exercise at the Integrated Training Exercise 3-15 at Marine Corps Air Ground Combat Center (MCAGCC) Twentynine Palms, Calif., May 19, 2015. 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 Airman Christopher J. Dyer/ Released)