It should be mandatory airline policy that a FA checks the lavatories after each passenger uses it. And a thorough inspection--check all the compartments, etc. Make it that much harder to assemble anything. I think everyone agrees that lavatories are the weak points in security these days.
That being said, I'm not feeling thrilled about this, given that I'm flying to LA next week. Gulp. I really cannot believe that 14 Syrians who bought one-way tickets to LA were allowed onto one flight. Unreal.
Well ask the airlines if they are going to bring a explosives sniffing dog on after everyone is seated. I wonder if they made such an announcement BEFORE boarding started, how many would all of a sudden have an emergency that calls them away?