Why don't terrorists combine chemicals in flight?
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.