A few weeks ago, I was pulled off an HP plane at EWR. On the jetway was a PA police officer, a NJ state trooper and an Army guy with a big gun.
Turns out somebody saw me in the PC looking at a terminal map and was concerned. (Was meeting a friend in Vegas, wanted to know where to go.)
It must've been at least 15-20 minutes between the time I left the club to board. I suppose the fact that I was looking for passengers to give my free companion upgrade to made me look even more suspicious.
The officers were all polite, acknowledged the awkwardness of the situation and after a few questions, got me back on the plane.