[Vaquero]

He broke Cooper’s Rules

Jeff Cooper’s Rules of Gun Safety

RULE I: ALL GUNS ARE ALWAYS LOADED

RULE II: NEVER LET THE MUZZLE COVER ANYTHING YOU ARE NOT WILLING TO DESTROY

RULE III: KEEP YOUR FINGER OFF THE TRIGGER UNTIL YOUR SIGHTS ARE ON THE TARGET

RULE IV: BE SURE OF YOUR TARGET

[House Atreides]

Another rule for your list: USE A HOLSTER WHEN YOU CARRY