Why not? If the TSA's purchases were controlled by what really works for security and not by whose pockets can be best lined, perhaps someone would have realized the following: The threat of airplane bombings didn't suddenly start a decade ago. It's been a threat for decades. So how did we manage just fine for so long with just the WTMD and baggage x-rays? Better yet, how did no planes fall from the sky in the TSA's first eight years of existence, before the scanner deployment began?