I'm afraid this incident highlights a fundamental point of vulnerability in the entire national air transportation network more than it says anything positive or negative about guns, crazy people, security, the TSA, or anything else.
DAT--I'm not a professional by any means, but most people know instinctively that the TSA is little more than street theater, and that no security system worth its salt is going to work without actually PROFILING bad guys, asking the questions, doggedly pursuing the red flags when they pop up.
TSA has shown themselves utterly unwilling and unable to do any of these things.
How many times have you been traveling, thinking, well, if I was gonna do this, here's how I'd go about it...
And luckily for EVERYONE in Terminal 3, this dipshit was only gunning for TSA folks. If he'd been just out for a body count, it would have been UGLY.