Mel switches into a dive the second she hears the shot, and comes rocketing down out of the blizzard, diving like a falcon with the world's most tasteless plumage.

She's from a completely different direction than Goldy, so at least one of the pairs have managed to present their backs to her.

She pulls the pin of her grenade and hurls it at the nearest guard, jerking out of the dive at the same time. Moving fast and erratically, she presents a very obvious moving target, and hopefully a distraction from the snipers.