U.S. Marines assigned to 1st Tank Battalion, Delta Company, receive a mobilized operations course event brief from a Marine assigned to Tactical Training Exercise Control Group, both located at Marine Corps Air Ground Combat Center Twentynine Palms (MCAGCC), Calif., during Integrated Training Exercise 2-15 at MCAGCC, Calif., Feb. 5, 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 Staff Sgt. Heather Cozad Staley/Released)