Finely turned out! I wonder why the TSA are interested in utilikilts?
I don't know why, but it seems that they are seeing them often enough that they recognize a Utilikilt when they see one.

I have been wanded a couple of times when the snaps set off the metal detectors, so maybe the TSA has special procedures for wanding Utilikilt wearers (one I would recommend is not asking us to remove our belts).