Riot Role-Play Marines detain a role player during a riot control mission scenario as part of a noncombatant evacuation exercise at Kiwanis Park in Yuma, Ariz., Oct. 16, 2015. The Marines are assigned to the 2nd Battalion, 7th Marine Regiment. U.S. Marine Corps photo by Pvt. George Melendez SHARE: Download: Full Size (1.84 MB) Credit: Pvt. George Melendez VIRIN: 151016-M-VR252-810.JPG Photo Gallery