Smoke rings launched by a South Korean army K200 Infantry Fighting Vehicle burst over a training ground where South Korean and U.S. troops practiced working as a single force to assault an objective with ground troops supported by aircraft. The smoke helps hinder the enemy's view. The training ran July 30 through Aug. 4, at a training range near Pocheon and involved U.S. troops from Company B, 2nd Battalion, 12th Cavalry Regiment, part of the 1st Cavalry Division's 1st Armored Brigade Combat Team. (Photo by Sgt. Christopher Dennis)