[[So far there’s been very little pre-check-in screening in Western Europe - see Brussels, for example. I’d expect that to change but I can’t imagine the nightmare it will cause if they add another level of screening at Heathrow or de Gaulle .]]
It doesn’t matter how much screening they do when they hire muslims to do the screening.
Actually, in a lot of the world Muslims are not only the perpetrators but also the biggest victims of terrorist attacks. Lots of Muslims are motivated to prevent attacks.