There's no such thing as an "ex" Marine

I think I have a new hero. Guy gets attacked by four people — one with a shotgun, another with a pistol. Armed with only a pocket knife, he manages to kill one of his attackers and put another in critical condition. Don't really know what happened to the other two, but here's hoping they go the living crap kicked out of them but declined medical attention. That is quite possibly the coolest thing I've heard. Ever.