> How realistic the bomb was would radically change the test. Not really - the screening is done by looking at x-ray images of bags on a conveyor belt. The vi

> How realistic the bomb was would radically change the test. Not really - the screening is done by looking at x-ray images of bags on a conveyor belt. The visual representation of a 'bomb' on the agent's screen would not change one iota if a pipe bomb didn't contain a real detonator. Detecting the presence or absence of a real detonator would require much more sophisticated techniques, equipment, and personnel than are in use at tsa checkpoints