... but it's not about security - it's about humiliation and it's MUCH more fun getting at someone in uniform than your average man in the street.
Quite why you would want to attack somebody with a laptop or nailcilppers when you are about to fly 400 tons over the densest populated real estate in the world I don't know?
(I just paxed through LGW with my JBL Creature II in a black canvas bag complete with transformer; associated wiring weird shaped woofers etc.. and no query at all. Maybe I should try it in uniform next time?)