I just got done flying across country, to my 2 weeks of active duty and back. The only thing they found questionable was a large socket in my carry-on(which would go into my extra pair of socks as a bashing implement), and I always had to have my jump boots x-rayed. I had several carabiners clipped to the handle & zipper of my bag. One screener thought that my welding helmet and gloves were riot-gear, which is pretty pathetic for anyone involved in security.
I was chosen for 'random' search on every single leg of my flights.
On my last leg, one of the flight crew came out of the cockpit and assisted the flight attendants.