Sounds like the TSA might soon be in the market for some
Sniffex devices -- dowsing rods for explosives.
"In a test by the U.S. Navy, Sniffex didn't register when two trucks passed within 20 feet, hauling a half ton of explosives." The Navy's counterterrorism technology task force tested Sniffex and concluded "The Sniffex handheld explosives detector does not work." Despite this, the military bought eight for $50,000.
Notwithstanding the above, apparently they are still
being used in Iraq by Iraqi forces.
Should be a perfect fit for the TSA.