U.S. Army Col. Joseph DiSalvo, commander of 2nd Brigade Combat Team, greets a future voter outside a Sadr City polling site. U.S. Army Lt. Col. Gary Luck (center), commander of 3rd Battalion, 15th Infantry Regiment, keeps an eye on the proceedings as U.S. soldiers provide support to Iraqi Security Forces protecting the polling sites. U.S. Army photo by Spc. Ben Brody