Anti-government protesters pray atop an Egyptian army vehicle in Tahrir Square in downtown Cairo Friday, Feb. 11, 2011. The Egyptian government announced later Friday that President Hosni Mubarak has stepped down. (AP Photo/Tara Todras-Whitehill)

Photo by: Tara Todras-Whitehill

Anti-government protesters pray atop an Egyptian army vehicle in Tahrir Square in downtown Cairo Friday, Feb. 11, 2011. The Egyptian government announced later Friday that President Hosni Mubarak has stepped down. (AP Photo/Tara Todras-Whitehill)