New Restrictions Quickly Added for Air Passengers - NYTimes.com: "The government was vague about the steps it was taking, saying that it wanted the security experience to be “unpredictable” and that passengers would not find the same measures at every airport — a prospect that may upset airlines and travelers alike."
The man who did this was so obviously dangerous that his own father had warned the US Embassy about him. He was on a list of people known to have terrorist connections. He had been going to places like Yemen, where the bomb was built by some Al Qaeda maniac (so the stories say at this point). But he had a US visa and hopped on a plane that was to land in Detroit--except that he tried to blow it up with explosives in his underwear.
So--what does the government learn from this huge security failure? Don't let anybody get out of their seat or hold anything in their lap for the last hour of the flight.
This nation is being run by idiots. No other conclusion is possible.