rebels are pleading for more help and nato is dropping more bombs on the capitol. nato forces have targeted several locations there. do you have a sense, what exactly did they hit? >> reporter: certainly, nato is saying targeted locations south of tripoli as well as around the town of serte. that is the headquarters of the 32nd brigade here in libya. that's the infamous hamas brigade commanded by one of moammar gadhafi's sons. they say from that headquarters, gadhafi's forces were conducting strikes against forces in misrata and on the eastern front. the hamas brigade is the best equipped and best trained of gadhafi forces, and also the most loyal to the regime. the other cluster of air strikes happened around the town of