Trolls, go find some other sandbox to play in.

Like has been ably pointed out already, and EVERYONE here knows already, air travel can never be 100% secure. It sounds like this should have sent up a few warning flags (terror-connected foreigner on a one-way ticket) – but in order to have a secure system that would have caught this, well, i’m not sure I want to live in that world.

The best defense is a good offense. Sigint, NSA interceptions, infiltration, and digging a bunker in the Afghanistan desert and putting up a sign saying “Jihadis, please come here to die.”