Army soldiers launch and position bridge bay sections during River Assault 2011 on Fort Chaffee, Ark., July 27, 2011. The soldiers are assigned to the Reserves 652nd Multi-Role Bridge Company, Ellsworth, Wis,. River Assault 2011 is a two-week extended combat training exercise that utilizes the technical skills of various engineer units to construct a floating improved ribbon bridge across the Arkansas River. Photo by 1st Sgt. Larry Mears.