In this Thursday, Sept. 15, 2011 photo, revolutionary forces ride in a truck with a mounted missile launcher on the main ring road that accesses the center of Sirte, Libya. In a surprise advance, revolutionary forces entered the outskirts of Sirte, 250 miles (400 kilometers) southeast of Tripoli along the Mediterranean coast, on Thursday and were facing rocket fire, according to a member of the military council from the nearby city of Misrata, which was leading the assault.(AP Photo/Gaia Anderson)