I went whale watching outside San Diego in 2000. I think it was April so a bit less than 1.5 years before the attacks. It seems like everyone in San Diego is either a Marine or in the Navy and the captain of the whale watching boat was ex-Navy. As we were leaving the harbor one of the aircraft carriers was coming in. The captain of our boat did something like raise and lower the US flag on our ship which then led the Aircraft carrier to do the same thing with about 40 soldiers coming out on the edge to salute. Was very cool. Three things struck me. First, how long it was taking to get out of the damn harbor. Second off how close we could get to a carrier. I doubt that's true anymore. Third that the deck had armed jets on it. There were only a handful but I'm pretty sure they were armed. Since I'm no expert I'll admit they could have been fuel tanks or something but from where I was at they looked armed. Maybe San Diego is unique but there seemed to be an awful lot of firepower there. You saw tanks from the side of the freeway, Navy Seals on the beach, a whole squadron of Helicopters of all sorts over by Coronado, tons of smaller Navy ships with giant guns, etc.
How hard could it really have been to dig up 1 or 2 jets that were armed on 9-11? I mentioned Norfolk since I know they have a giant navy base. You'd think the Airforce at Andrews would have 1 plane, with 1 missile, with 1 pilot, ready to go. It's just a lack of preparedness that it wasn't the case and I really don't think there's a good excuse for it.