Perhaps they know who took Stevens to the hospital but telling us a terrorist group did to try and keep their HOSTAGE alive would sound a bit DAMNING.
It reads like this thing went from a staged hostage-taking to a full on war because two unknowing SEALs decided to ignore their orders and engage the foreign players.
The brave actions of Smith, Woods, and Doherty were beyond heroic; Impossible to characterize with mere words. If Bush were President they'd be alive. I have no doubts about that. They're dead because their Commander-In-Chief abandoned them for political reasons.
Also note: Simple positive fresh air supply system (with redundancy) to be run to any "safe room".