The fact the reporter left out his physical appearance would lead one to believe...
You do not have to be coy, it was an Amish hit.
Tiger Woods, on day four of any tournament.
No, This type of trying to kill goes back a few years. the Cripts and Bloods (which he seems to be) put out that killing a cop or a soldier would get you full memebership in the gang. Making this a more personal hit, stabbing rather than shooting, may put him in a higher status.
However, most first reports are inaccurate and he may just have a dispute with the soldier (GF, Money, disrespect). Need more information before making a conclusion.