A U.S. Army Soldier from 1st Squadron, 2nd Stryker Cavalry Regiment conducts a night raid Oct.18, 2007, in Baghdad, Iraq. (U.S. Army photo by Spc. Jeffery Sandstrum)

U.S. forces demonstrate entry tactics used by the Iraqi counter terrorism force comprised of coalition and Iraqi forces June 26, 2007 in Baghdad, Iraq. (U.S. Navy photo by Mass Communication Specialist 1st Class Michael B.W. Watkins) www.army.mil

Iraqi special operations forces and coalition forces conduct a search and rescue mission in Baghdad, Iraq, May 13, 2007, in an attempt to find three U.S. Army Soldiers missing in action. (U.S. Navy photo by Mass Communication Specialist 1st Class Michael B.W. Watkins) www.army.mil