The thing that realyl chafes me about security is the fact that no one in power seemed to make an effort to ask the frontline people their opinions.
They should have spoken with pilots, flight attendants, gate agents, etc and queried them about suggestions.
I hate to say it because some knuckledragging terrorist might be reading this thread, but there are so many things that I see on an average day at work that I've got to bite my tongue about.
Primarily, I think the problem with security is that we turned it over to a federal government that really has no interest, or better yet a clue about what it takes to make flying truly secure (and I'm talking bi-partisan).
But the problem was that if you left it in the hands of private business, they seem more than willing to 'play the odds' than spend of money to effectively screen passengers.
If you turn it over to government, then they create a bureaucracy, people with important sounding titles and appropriations committees and lose sight of the target.
If you let the airlines handle it, it's going to be the cheapest, most "wafer-thin" process to maximize profits. If you leave it to the government, you're going to get billions of dollars, only of which 5% of that goes for security and the rest goes for monolithic bureaucracies, non-related projects and, in the case of the TSA, fancy digs in Vail.