Libyan anti-government fighters sit by a fire to stay warm as they control a checkpoint on the outskirts of the southwestern town of Nalut, Libya, Monday. The town is currently in control of the Libyan anti-government forces. Lefteris Pitarakis/AP hide caption

itoggle caption Lefteris Pitarakis/AP

Anti-Gadhafi protesters wave their old national flag as they stand atop an abandoned army tank in the eastern Libyan city of Benghazi on Monday. Patrick Baz/AFP/Getty Images hide caption

itoggle caption Patrick Baz/AFP/Getty Images

Gentex Corp.'s rearview mirror camera display enables drivers to see objects and people behind the vehicle using a tiny camera mounted to the back of the car. Courtesy of Gentex Corp. hide caption

itoggle caption Courtesy of Gentex Corp.

Astronaut Steve Bowen works outside the International Space Station's Quest airlock during Monday's spacewalk. Bowen's spacewalk was unexpectedly extended by a computer malfunction. NASA TV hide caption

itoggle caption NASA TV

A rebel militiaman stands guard at a Libyan oil refinery Sunday in Al Brega, Libya. The opposition leadership has stressed that oil facilities in rebel-held territory are safe, despite the conflict roiling the country. John Moore/Getty Images hide caption

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A Somali girl in Mogadishu. The city was once a beautiful, seaside tourist town, but two decades of civil war has left it in ruins. Frank Langfitt /NPR hide caption

itoggle caption Frank Langfitt /NPR

A Gadhafi supporter simulates the salute portrayed in a photograph of Libyan Leader Moammar Gadhafi, as he and others stage a small rally on the stage of the Roman amphitheatre at the Sabratha archaeological site. Ben Curtis/AP hide caption

itoggle caption Ben Curtis/AP

A Libyan civilian holds anti-aircraft ammunition at an army barracks in Benghazi, where dozens of civilians registered for civil defense training amid fears of air raids from Tripoli. Marco Longari/AFP/Getty Images hide caption

itoggle caption Marco Longari/AFP/Getty Images