Originally Posted by ASU2003

Maybe the terrorists are getting smarter, if planes start dropping out of the sky once a week, and no one knows how or who is behind it, it puts a different twist on things. It would definitely start to terrorize people if you don't know if your plane might be next.

But, what I worry about is that if they do find explosive residue somehow, then they would cover it up since there would be nothing to gain from confirming that terrorists blew up a plane at this stage.