I guess waggling your trigger finger and saying "This is MY safety" isn't so cool after all.
Considering that SF "operator" Barry Sadler shot himself in the head handling a loaded gun in a moving vehicle I would say basic safety rules apply to "secret squirrel super ninja operators" just as much as to us mere mortals.
1 ALL guns are loaded, ALWAYS
2 Never let the muzzle point at anything you don't want holes in
3 KEEP YOUR DAMNED BOOGERHOOK OFF THE BANG SWITCH
4 Be sure of your target and background only applies to intentional shooting rather than general handling of "unloaded" guns
Did I mention ALL guns are ALWAYS considered "loaded", and KEEP YOUR FINGER OFF THE TRIGGER ?