Dateline: WASHINGTON The Transportation Department inspector general found airport security screeners on several dozen occasions failed to catch guns and simulated explosives, even after the September terrorist attacks, a person familiar with the report said Monday.
Inspector General Kenneth Mead's report found screeners missed knives 70 percent of the time, guns 30 percent of the time and simulated explosives 60 percent of the time, said the source, speaking on condition of anonymity.
You will never stop guns from getting through security period .The ramp agents , caterers , mx , etc all have free access to the airplane without going through security . How are you going to stop that from being a threat ?