Absolutely spot on, pre-screening and profiling is the way forward, not this fiasco we currently have, both in the UK and US I might add.
If I had the inclination to bring down an aircraft there would be a smoking hole in the ground. Thankfully I don't.
The whole system needs a rethink, it's far too tied up in political corectness and bureaucracy that it has defeated the purpose it was originally intended for.