U.S. Marines watch for enemy activity during an urban clear exercise as part of Integrated Training Exercise 2-16 at Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., Feb. 11, 2016. MCAGCC conducts relevant live-fire combined arms, urban operations, and joint/coalition level integration training that promote operational forces' readiness. (U.S. Air Force photo by Senior Airman Steven A. Ortiz)