CB Axel, 2nd Life asked:
What is to stop lots of terrorists each bringing very small amounts of liquid explosive and combining them in flight?
Pavel - Well, the existing restrictions are meant to deal with such situations because 100ml is not to make a viable bomb and obviously, any precursors for explosives will be detected by the instrumentation I was describing. So, it’s not just that explosives are detected, but also explosive precursors. So the list against which we are comparing the data is very comprehensive.
It certainly would not be easy to whip up a small batch of nitroglycerin in an airport restroom. And, some of the precursors such as Nitric Acid and Sulfuric Acid would certainly raise a red flag for carry-on luggage.