Maybe this is common knowledge, maybe I'm sounding a bit stupid. But looking at the flight paths from the web page below, the second the planes went off the flight paths, why were no jets scrambled? Especially the Pentagon crash. It did a u-turn in Ohio and headed back towards Washington. Surely, after the earlier crashes, alarm bells should have been going and jets should have been up, shooting the plane down over a safe place. It looks like it was around 45 mins from u-turn to crash, surely enough time to take the plane down?
I'm not on a conspiracy theory rant, just wondering why they didn't act when they could've have?
The web page with basic info and flight paths - http://news.bbc.co.uk/hi/english/static/in_depth/americas/2001/day_of_terror/the_four_hijacks/flight_77.stm
Thanks