Photojournalists Guy Martin, left, and Dominic Nahr take cover behind a wall as anti- and pro-government protesters throw stones during a clash near Tahrir Square in Cairo, Feb. 3, 2011.

Rebel fighters moved from house to house, back street by back street to fire on Gadhafi's forces. Here a rebel soldier takes cover in a stairwell as he prepares to fire on Gadhafi loyalists in the adjacent room, just a few meters away. Tripoli Street, Misrata, Libya, April 20, 2011.

Rebel fighters run across an intersection that was frequently targeted by sniper fire. Misrata, April 18, 2011.

Rebel fighters takes cover behind trees on the strategically important Tripoli Street in Misrata during a fierce battle for control of the road on the morning of April 20, 2011. Hours later Guy Martin was seriously injured.

A general view of Tripoli Street from the terrace of a building used by snipers loyal to Libyan leader Moammar Gadhafi during fighting with rebels in downtown Misrata, Libya. May 22.

A man walks next to traces of the battles in Tripoli Street. May 22.

A baby carriage is seen on top of a barricade in Tripoli Street. May 22.

A couple lift their daughter's pram as they walk next to a destroyed tank in Tripoli Street. May 25.

An effigy is seen hanging from electric cables meters away from Tripoli Street. May 23.

Women visit a makeshift museum where ammunition is displayed in Tripoli Street. May 22.

A wounded youth evacuated from the besieged Libyan city of Misrata waits for an ambulance inside a ship after it docked at the port in Benghazi on May 5.

A doctor attends to a wounded man evacuated from the besieged Libyan city of Misrata on May 5, as a ship carrying migrants and civilian casualties from Misrata docked in the port of the rebel stronghold of Benghazi.

A Libyan woman evacuated from Misrata is greeted by wellwishers as she gets off a ship in Benghazi on May 5.

A Libyan rebel fighter looks out from a high building in the besieged city of Misrata, Libya, on Saturday, April 23.

Libyan rebel fighters run across a street in the besieged city of Misrata, Libya, on Saturday, April 23. Government troops retreated to the outskirts of Misrata under rebel fire Saturday and the opposition claimed victory after officials in Tripoli decided to pull back forces loyal to Moammar Gadhafi following nearly two months of laying siege to the western city.

Rebel fighters point at captured Gaddafi soldiers in the back of a rebel forces pick-up truck outside a Misrata hospital on April 23. Rebel fighters captured more than a dozen wounded Gaddafi soldiers and carried them to the hospital early Saturday morning.

Tim Hetherington, center, is assisted by Libyan rebels as he climbs down from a building after gunshots rang out from loyalist forces inside in the besieged city of Misrata on April 20, hours before he was killed in the city while covering the conflict.

Samar Hassan, 5, screams after her parents were killed by U.S. Soldiers with the 25th Infantry Division in a shooting January 18, 2005 in Tal Afar, Iraq. The troops fired on the Hassan family car when it unwittingly approached them during a dusk patrol in the tense northern Iraqi town. Parents Hussein and Camila Hassan were killed instantly, and a son Racan, 11, was seriously wounded in the abdomen. Racan, paralyzed from the waist down, was treated later in the U.S.

Rebels fighters escape from a building they had entered on Tripoli Street in the city of Misrata, believing they had already captured it from troops loyal to Moammar Gadhafi, on April 20. Rebels entered the building, but were fired upon by several gunmen still inside.

Rebel fighters discuss how to dislodge a number of ensconced troops, loyal to Moammar Gadhafi, who were firing on them from the next room during house-to-house fighting on Tripoli Street in downtown Misrata on April 20. Rebel forces assaulted downtown positions, briefly forcing them back over a key bridge and trapping several in a building.

Rebel fighters storm out of a building occupied by forces loyal to Moammar Gadhafi on Tripoli Street in Misrata on April 20.

Rebel fighters carry a comrade wounded during the effort to dislodge pro-Gadhafi troops who were firing on them from a building (background) during house-to-house fighting on Tripoli Street in downtown Misrata on April 20.