I transited two security controlled AD's this week, travelling on RPT flights out of each, repositioning to fly (myself) from another location.
I checked my suitcase and my laptop bag in, and carried just my flight bag with me as hand luggage. I neglected to think about the fact that I had two fuel drain tubes (both containing screwdrivers) and a regular phillips head screwdriver in the bag.
Despite being screened, my bag got through security no worries at all, and I boarded with all 3 screwdrivers in the bag.
On the way home, however, the screwdriver was detected. At this point I realised I should've packed them all in my suitcase, and also that I'd travelled previously carrying all three. So, I surrendered my screwdriver to the security attendant (or whatever they're called)...and proceeded to board with my remaining two fuel drains!
Looks like all those expensive enhancements have been worth it. NOT.
Oh, but they picked my belt buckle, that set the metal detector off.
520.