Well, the scanner would likely have picked up the Panty Bomber’s explosive.
But, he didn’t have to go thru TSA. He got on the plane in Nigeria & never had to be screened again.
The panty bomber’s father is a prominent citizen in Nigeria.
This man contacted the American authorities and told them his son was a possible terrorist and a threat to flights headed for the United States. What did the American authorities do with this information? They stuck it up their collective behinds which, by the way, is a place where explosives can’t be detected by the TSA’s strip search machines.