Sure, I'll play.
As far as the immediate after-effects of this horrible tragedy, yes, I was happy with the way the government, really our President, handled it. I was in college at the time, only reading some articles here in there; but I was, as was much of the country, quite proud to be an American after seeing how the situation was being handled.
Going beyond that is a can of worms that will probably be debated forever.
I will respond to the "warning signs" comment. I think that's a bunch of bull. What bad situation could you not look back at and say "If I had only done this, or paid more attention to that." Our government receives warning signs like this almost daily. I don't see this as being any different.