Pictures of the Day: Tuesday, Mar. 22, 2011

Libyan rebels retreat as mortars from Muammar Gaddafi's forces are fired on the outskirts of Ajdabiyah, Libya.
Anja Niedringhaus / AP

Heat of Battle

Libyan rebels retreat as mortars from Muammar Gaddafi's forces are fired on the outskirts of Ajdabiyah, Libya.