They need to start screening cargo ,, as I've pointed out before cargo is not screened at all... why even bother to screen passengers when you leave a hole that big in the security net? ... BTW nice of the article to give hints on how to get plastic explosives through security...
There's nothing in there the terrorists don't already know. The real problem is that TSA took a potentially useful technogy and rendered it useless. I think that all Air Marshalls should be teamed up with a trained police dog that spends the entire trip walking up and down the aisle of the plane. Maybe Muslims who are prone to jihad - Arabs, Asians, white converts, it doesn't matter - will find the thought of being confined in a plane with a dog so distastful, they'll start driving or taking the train. Then we can do away with most of the crap we have to go through to get on a plane.