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It didn’t take long to arrest the New York subway shooter. He actually called police himself to tip them off to where he was.

Plus, he left his Glock, the keys to his rented van, a receipt for his storage unit behind in the pocket of his discarded construction vest.

Sounds like a guy who wanted to get caught. And good thing he was, because in that storage unit was more ammo and a barrel adaptor for a silencer.

So, the first question I ask is this: what does this tell us about how to prevent the next attack, especially if the attacker is someone who doesn’t care if he gets caught?

I don’t think more gun rules will make a difference. It’s already illegal to bring a gun into New York City without a city permit, and in any case, no one gets scanned entering the subway.

But there is one thing that might have stopped him: his videos.

“I was a nice person, I wanted to help people — now, I want to kill everything in sight,” he said in a video he posted before the shooting.

He was one angry man, and did what a lot of angry people do – .

He needed someone to talk him down, or at least check him out.

I suppose YouTube could use artificial intelligence to scour its videos for red flags and automatically alert the cops, or at least a counselor.

But that’s probably too Big-Brotherish.

So, it’s just up to us. It’s up to us to check out the YouTube channels of random people, and if we a pattern of angry posts and are able to find out where they live, we could potentially alert neighbors, or even maybe let nearby gun shops know.

Because when anybody can get a weapon, it means every consistently angry person is potentially dangerous. And I think by now we know that when someone shows you who they are – believe them.

Listen to Seattle’s Morning News with Dave Ross and Colleen O’Brien weekday mornings from 5 – 9 a.m. on ³ÉÈËXÕ¾ Newsradio, 97.3 FM. Subscribe to the podcast here.