Unfortunately legality and case law dont mean anything when someone crazy shoots you dead. TBH I can't decide if your stupid or insane for laughing at anyone who shot like that.
***edit***
when the guy mentioned target practice, your FIRST instinct should be to get the hell out of there, not record.
Min flow is the best thing to happen to the river ever. Its good for the fish, good for boaters(with a jet), and waders. lately they have been sticking more or less to projected discharge from the SWPA page.