u.s.

U.S. Army UH-60 Black Hawk helicopters lift off from Forward Operating Base Remagen, Iraq, for Operation Swarmer on March 16, 2006. Soldiers from the Iraqi Army's 1st Brigade, 4th Division and the U.S. Army's 101st Airborne Division's 3rd Brigade Combat Team are taking part in the combined air...

Two U.S. Army soldiers use binoculars and a riflescope to watch for insurgents downrange as they conduct a combat patrol near the Syrian border in Iraq on March 6, 2006. The soldiers are attached to Foxtrot Troop, 1st Armored Division. DoD photo by Staff Sgt. Aaron Allmon, U.S. Air Force.

U.S. Army and Iraqi soldiers look out the rear of a CH-47 Chinook helicopter as they are extracted after completing a mission to detain or eliminate insurgent activity southwest of Samarra, Iraq, on Feb. 27, 2006. U.S. Army soldiers from the 3rd Battalion, 187th Infantry Regiment and Iraqi army...

A US soldier withstands a sandstorm in Iraq.

A US soldier maintains a watch around his convoy.

A US LAV (Light Armoured Vehicle) on patrol in Tikrit.

Paratroopers of the 173rd Airborne Brigade in north Iraq.

A lone US machinegunner maintains a sentry watch in north Iraq.

A US Navy Sea Stallion utility helicopter in Umm Qasr.

US Marines dive for cover during a mortar attack in a sandstorm.

US Marines operating near Umm Qasr launch an anti-tank guided missile.

US soldiers relax within a captured palace in Baghdad.

A US HUMMWV ('Humvee') passes a burning Iraqi APC.

A US Humvee in Falluja

A US foxhole near Nasiriya.

A US self-propelled artillery gun in action near Najaf.

A US self-propelled artillery gun appears possibly to be exploding in a misfire.

A pair of US soldiers beside a disabled Iraqi missile battery.

A US boat patrol on the Tigris river in Iraq.

A U.S. M2 Bradley plows past an uninterested camel.