So, they dont want to fight, and if a fight breaks out they have bunkers to hide in while they blow their own stuff up?
They aren't affraid of a fight. They just don't want to. Switzerland has one of the most efficient millitaries in the world. Their sharpshooters are some of the best in the world. Do you think that Hitler didn't invade Switzerland because he respected their choice to be neutral? He was worried what would happen if he crossed their boarders.