Ohio National Guard Soldiers of 2nd Squadron, 107th Cavalry Regiment, headquartered in Hamilton, Ohio, fall back under the concealment of smoke during a combined-arms exercise held at the Infantry Squad Battle Course at Camp Atterbury, near Edinburgh, Ind., Aug. 12. The combined-arms, live-fire exercise was the culmination of two years of planning, preparation and training that integrated snipers, scouts, mortars, infantry and medics. (U.S. Army photo by John Crosby, Camp Atterbury Public Affairs)