Iraqi Shiites offer their prayers in Kufa, 100 miles south of Baghdad, Iraq, Friday, Feb. 16, 2007.
Iraqi army soldiers search a driver at a vehicle checkpoint in central Baghdad, Iraq, Friday, Feb. 16, 2007. U.S. and Iraqi forces pushed deeper into Sunni militant strongholds in Baghdad, where cars rigged with explosives greeted their advance Thursday.
A U.S. military Apache helicopter releases an anti-missile decoy flair as it flies over Baghdad Thursday, Feb. 15, 2007. Thunderous booms were heard across Baghdad as U.S. and Iraqi forces launched a major operation in a Sunni insurgent-infested Dora neighborhood Thursday, a spokesman said.
An Iraqi army soldier walks up to what remained of a car that was used to make a booby trap in Baghdad, Iraq, Thursday, Feb. 15, 2007. The booby-trapped car exploded in western Baghdad, targeting an Iraqi army patrol and wounding two soldiers, the military said.
Pfc. Devin Franey, left, and Pfc. Rocky Vergara of Klute, Texas, both of the 1st Calvary Division, pause during night watch on the rooftop observation post at Combat Outpost Casino Feb. 14, 2007, in the Gazaliyah neighborhood of Baghdad, Iraq. Combat Outposts in neighborhoods are a key part of President Bush's new Iraq plan.
Iraqi army soldiers direct traffic at a vehicle checkpoint in Baghdad Feb. 15, 2007.
Sgt. Marcus Gibbs, 26, from Pensacola, Fla., stands guard with the 5th Battalion, 20th Infantry Regiment of the Second infantry Division during a search operation in the Shaab neighborhood in Baghdad, Iraq Thursday, Feb. 15, 2007.
A U.S. soldier from the 5th Battalion, 20th Infantry Regiment of the Second infantry Division greets a child in the Shaab neighborhood of Baghdad Feb. 14, 2007 during a house-to-house search.
An Iraqi girl eyes U.S. soldiers from the 5th Battalion, 20th Infantry Regiment of the Second infantry Division as they search her family's home in the Shaab neighborhood in Baghdad Feb. 14, 2007.
A shop owner arranges flowers and decorations in a shop on Valentine's Day in central Baghdad Feb. 14, 2007. Despite raging sectarian violence and harsh circumstances, some Iraqis marked Valentine's Day and shopped for gifts for their loved ones.
People gather to inspect a wreck of a car in front of a building heavily damaged by Monday's car bomb attack in central Baghdad, Iraq, Tuesday, Feb. 13, 2007.
Iraqis stand in front of a house heavily damaged in a suicide bomb attack in Baghdad, Iraq, Tuesday, Feb. 13, 2007.
A U.S. soldier secures the site where a suicide bomber detonated a van packed with explosives in a crowd outside a food warehouse in the mixed west Baghdad district of Iskan, Tuesday, Feb. 13, 2007.
Army Sgt. Corwin Cone, 24, from Chattanooga, Tenn., of the 1169th Engineer Group, fishes for carp at the end of his workday at Camp Liberty in Baghdad, Iraq, Monday, Feb. 12, 2007. "This is my little morale facility right here," he says. "Instead of playing cards or something, I go fishing."
Iraqi firefighters work to control the fire that swept over buildings at the site where a car bomb exploded in central Baghdad Monday, Feb. 12, 2007, ripping through popular Shiite market areas and killing at least 70 people and wounding more than 100, security officials said.
Iraqi firefighters work to control the fire that swept over buildings at the site where a car bomb exploded in central Baghdad Monday, Feb. 12, 2007, ripping through popular Shiite market areas and killing at least 70 people and wounding more than 100, security officials said.
An Iraqi runs past a building in flames after a double car bomb attack in central Baghdad, Iraq, Monday, Feb. 12, 2007. Thunderous explosions and dense black smoke swirled through the center of Baghdad when at least one car bomb blew up in an underground parking garage, setting off dozens of secondary explosions and killing at least 70 people, police said.
A man injured in a double car bomb attack is helped into Baghdad's al-Kindi hospital, Iraq, Monday. Feb. 12, 2007.
An Iraqi stands in disbelief in front of a burning building after a double car bomb attack in central Baghdad, Iraq, Monday, Feb. 12, 2007.
Smoke billows from the vicinity of Shorja market in central Baghdad, Iraq, Monday, Feb. 12, 2007.