The 5 things that must happen for a firearms tragedy to occur:
1. The gun must be functional.
2. The gun must be loaded.
3. The gun must be handled.
4. The gun must be pointed at someone.
5. The trigger must be pulled.
You can NEVER be too careful.

I've been around firearms all my life and have taught many many people regarding the proper way to handle all types of firearms. Every time I handle a gun or pass it to another person, I "ALWAYS" open the action to ensure it is NOT loaded!
ALWAYS,,, treat a gun as if it 'IS' loaded and never, ever, EVER,,,, point it at something that you don't intend to shoot!