We don't really even look for weapons. TSA puts on a show hoping the American people will think they're being protected.
Because of the limitations of the pat down, the device the Christmas Day terrorist had on him wouldn't have been found.
One of the problems after 9/11 was that the intelligence agencies and federal law enforcement agencies didn't speak to each other. So Bush appointed an Intelligence Czar to fix the problem. Eight years later and they're still not sharing info.
The next problem is we don't put in the proper people to do the job. Tell me what qualifies Janet Napolitano to be the head of Homeland Security. Oh yeah, she helped Obama get elected.
And lastly, the American people. Most have no clue and really think all these new measures are protecting them. And as long as the American people are like sheep and believe everything they are told by the government, the more they'll be taken advantage of.
What worries me is that Congress may want to be part of the theater to show that they are helping to protect the people by enacting inane laws that do no more than inconvenience experienced travelers, and make more money for airlines and shipping companies.