Any rate, not sure what the lesson is here. Don't chase hit and run thugs? (probably wise) Or perhaps avoid offering assistance because you might just get shot for your trouble?
BTW, I used to live in those apartments in the picture years ago while going to school. These have changed in N Arlington, for the worst.
The last report I heard on the radio a couple hours ago said the perp shot some one who was rendering aid to the wounded, in the head.