This assumes that it's the beauracracy that is at fault. While I'm certainly no fan of beauracracies-- they are cumbersome, don't deal well with change, and protect the inept-- they are not what is truly at fault here.
What's at fault is a Liberal mindset: Political Correctness -- the antithesis of common sense.
Even if each airport contracted with separate security agencies, you'd still have the same problem: the security companies would still follow the same idiotic policies because not to would invite lawsuits by the ACLU.
You do have a point there.
We should be profiling passengers much in the same way the Israelis do.
Man you need to get a grip. Arresting teachers because a student had a butter knife is not going to stave off the ACLU. In fact, I would applaud loudly if it invited an ACLU lawsuit. There are a lot of fascist mindless bureaucrats working in this country. They are motiviated by lots of other things besides PC. Liberalism is not the root of all evil in the US.