A CH-47 Chinook helicopter flown by Bravo Company, 7th Battalion, 158th Aviation Regiment, out of Fort Hood, Texas, carries an improved ribbon bridge bay to the Arkansas River during Operation River Assault 2015, a bridging training exercise involving Army Engineers and other support elements to create a modular floating bridge on the water at Fort Chaffee, Ark., Aug. 4. The entire training exercise lasted from July 28 to Aug. 4, 2015, involving one brigade headquarters, two battalions and 17 other units, to include bridging, sapper, mobility, construction and aviation companies. (U.S. Army photo by Master Sgt. Michel Sauret)