How dangerous are the pockets of resistance from Gadhafi loyalists inside Libya?

Celebrations in Tripoli's Green Square gave way to tension this morning after rebels told CNN that they'd heard Gadhafi army forces were heading their way, a possible indication that forces loyal to the dictator remain and that the fight for the country is not over.

Today on American Morning, Nicholas Burns, former Under Secretary of State and Professor at the Harvard Kennedy School of Government, discusses the possibility that there may still be some pockets of resistance within Libya's border and weighs in on how much of a threat these loyalists pose to the rebel forces.