but the rebels have their own firepower, courtesy of army defectors. >> more from alex crawford in just a moment. for days she documented the battle. still believed to be raging right now in zawia. you'll also hear from a woman trapped inside another town, mizrata, another city under attack by libyan government forces. and we'll talk with arwa damon who spoke exclusively with the resistance leader who now has a huge bounty on his head from gadhafi. we'll talk with our team of correspondents spread out across libya. in the east, opposition forces are fighting back hard with captured weapons, including katyusha rocket launchers. and anti-aircraft artillery. but the libyan air force is pounding them harder, hammering them with air strikes around ras lanuf. yet it is in cities farther west where wholesale slaughter is taking place. several times the gadhafi regime