Are there any established mechanics for firing into close combat and missing very badly?

While working my way through the combat rules, the need to shoot into close combat came up.

The attacker, a Human with a Smith and Wesson .357 (2d6+1) wanted to shoot a frogman who has just Stunned another Human in close combat.

Of course her Shooting and Wild dice landed on snake eyes. In my view, an epic fail.

So I started looking for what to do when you miss so bad something catastrophic should happen. I figured it would be something like the hit would randomly go to a character in base contact and she would have to roll to wound her friend.

But I’m having trouble finding something like that in the rule book. I’ll probably play it for the catastrophe in my game, because playing to fail is more fun) but I wondered if there was an established way of dealing with this.