Rebels make a quick retreat from Brega as pro-Gadhafi troops fire heavy artillery behind them. Amy Walters/NPR hide caption

itoggle caption Amy Walters/NPR

A Libyan rebel observes at a front-line checkpoint near Zwitina, the outskirts of the city of Ajdabiya, south of Benghazi, eastern Libya, on Thursday. Anja Niedringhaus/AP hide caption

itoggle caption Anja Niedringhaus/AP

Ahmed Jarbou, 45, a businessman from Benghazi, and his 2-year-old daughter, Jude, examine remnants of destroyed mobile artillery from pro-Gadhafi forces. Eric Westervelt/NPR hide caption

itoggle caption Eric Westervelt/NPR

Field Marshal Mohamed Hussein Tantawi, 76, talks to anti-government protesters in Tahrir Square on Feb. 4. Tantawi now heads the military council running Egypt. Khaled Desoukia/AFP/Getty Images hide caption

itoggle caption Khaled Desoukia/AFP/Getty Images