Breaching a facility is more difficult than defending it es  16d1  pecially when time is not on your side. (They were in the process of destroying evidence) Once breached, the cia who was outmanned & outgunned, and were now known to be fighting against other Americans forces (rather than hostile foreign invaders) surrendered. Many of the CIA paramilitary are ex special forces, including the cia paramilitary casualty who "died in Somalia" who was an ex navy seal. I'd like to think that many of the cia paramilitary ops team were lied to and thought they were defending America's interests. I doubt we'll ever know the full truth or the results of the interrogation of the cia paramilitary forces.