This story could have been written by one of the reporters at our local paper, the Times-Union. To them, "assault rifle" is one word with a space in the middle. They have never used "rifle" in a sentence by itself. And, of course, they never actually describe what kind of assault rifle is involved. I'm sure a single shot BB gun would be an assault rifle.
Two lives rounds on the ground? Sounds like someone needed some range time!! Glad for the security guard this jacko didn't know what he was doing!
It'd be nice to have more detail.
Well, being that it happened in Texas, the third perp might have a good chance of taking his "last ride on the silver needle". Two counts of Felony Murder.