Five tips to ensure the TSA doesn't steal your stuff
chron.com
chron.com
I heard that if you travel with a firearm, your bag is screened separately, and in front of you. Then your luggage is locked (locking is mandatory on bags with firearms) and sent on it's way. One article on lifehacker suggested carrying a starter pistol to utilize this loophole: http://lifehacker.com/5448014/pack-a-gun-to-protect-valuable...
So thats how people get on the no-fly list