We also use to have a carrier battlegroup in the Med. Where was that at? They generally have FA-18's ready to launch within 5-10 minutes (if not sooner) notice, in addition to the ones they generally have flying around at all times.
The point is: Obama had military options. Were any "ideal" or "optimal"? No, but the US military is good at improvising on the fly and accomplishing the mission. In this case being, "Save the Americans". Hell, he could have at least order airstrikes to give those Americans on the ground breathing room to scoot and move to other hiding places.
But failing to do anything, and letting Americans die is simply criminal. There needs to be impeachment hearings, THERE IS NO EXCUSE.
And I think Hillary released or had released the e-mails showing that State notified the EOP (Executive Office of the President, i.e. someone in the Situation Room). She's not going to fall on her sword for Barak.