A U.S. Air Force A-10 Thunderbolt II from Nellis Air Force Base, Nev., finished dropping its payload on a simulated target 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)