[Kip Hawley, former TSA head, writing for CNN][1]:

> The “prohibited items” list needs to be radically reduced to ban only real security threats such as explosives and toxins. As far as carrying knives, the FAA should make it a serious federal offense to intimidate a member of the flight crew or another passenger with a blade — and then TSA can remove blades from the prohibited list. Blades represent virtually no threat to the aircraft at this point. And the baggie rule should be dropped. Current technology allows threat liquids to be detected when they are taken out of the carry-on and scanned in a bin.

[1]: http://www.cnn.com/2013/08/06/opinion/hawley-tsa/index.html