Airport security has nothing to do with making flying safer and all to do with empire building.
Look at the screeners as they do their job; devoted to their particular point in the assembly line, they never look up or anticipate a terrorist in the line coming at them, and there is no armed response available to handle a terrorist even if they were to catch one (they have never caught one, and never will, but that is not the point of course). If there was a suicide bomber in the line and he "beeped", what would the security people do about it? With the press of other passengers, even a SWAT team would be hard pressed to deal with him, without killing everyone else in the room, even assuming the terrorist did not set off his bomb immediately. Utter stupidity and a complete waste of time. How anyone with a brain even as big as my dwarf hampster's can tolerate this farce I don't know.
More proof of the stupidity of the whole thing is the US sending F16s after Cessna 150s. What are they going to do if they catch one? Shoot it down? Imagine the collateral damage on the ground! Despite the fact that a light airplane has never been used in a terrorist attack and even if it was to be so used, it would be almost completely ineffective? All they can do is kill innocent passengers and crew, which is also their intention if an airliner gets hijacked.
The only reason flying is safer now is that we, the crews, know what we are up against and we, the crews, assisted by the cabin crew and the passengers, will prevent any future 9/11s. We do not need airport security in any form, but will accept it as it was before 9/11 (and remember there was no failure in airport security then, neither would the present airport security stop a similar attack). It took the FAA over two years to revise their "cooperate" strategy, which was a major reason that the 9/11 terrorists were successful, so don't count on anyone else's help. With F16s on each wing, everyone's hand will be against us.