Camp Atterbury, Ind. - A 81mm mortar crew with Weapons Company, 2nd Battalion, 24th Marine Regiment, 4th Marine Division fires high-explosive rounds during a fire-for-effect mission as part of their Reserve forces drill period training, March 15, 2014, at a firing range on Camp Atterbury Joint Maneuver Center. In addition to HE rounds, the teams also fired illumination rounds as the day turned to night to give better views of targets. (Marine Corps photo by Cpl. J. Gage Karwick/released)