@waldi
Well they had to have passport control because Brexit, so it wasn't a very big leap anymore.

But really, taking an explosive device large enough to rip a small hole in the fuselage is enough to kill everyone on an aeroplane, but will only kill yourself on a train. To have something that will create an explosion large enough to kill everyone on the train, all you need is a geiger counter...
@lanodan @ariadne