U.S. Army Lt. Col. Benjamin J. Bigelow, Great Lakes and Ohio River Division Deputy Commmander, was promoted to the rank of Colonel by Lt. Gen. Thomas P. Bostick, Commanding General U.S. Army Corps of Engineers at a ceremony in the Pentagon, Washington, D.C., Oct. 8, 2015. (U.S. Army photo by Alfredo Barraza/Released)