Seems to me firing into the air is breaking one of Cooper's Commandments about safely handling a firearm, of being sure your target and what is behind it.
Can't do that if you're firing into the air. Even Hiawatha knew that, IIRC.
Basic safety failures like that get people injured or killed.
Negligent man, Joey B.
Loyalty to petrified opinions never yet broke a chain or freed a human soul in this world — and never will.
— Mark Twain