i frequently travel with a hard sided halliburton roller fillled with electronics; wires, plugs, radio frequency transmitter black boxes, and handheld receivers.

It looks ominous, and I've never had a lick of trouble. I've never had it swabbed for explosives in the 25+ times I've travelled with it and most screeners don't even ask what's in the bag.

However, when I carry vitamins in my carry-on they're all over me.

I don't trust the TSA to idnetify and isolate real threats. They're just for show.