Hansam - good insight on the influence of pack mentality. I would also add that a dog of any breed can be trained to ignore just about anything, but when they are taken out of their element and exposed to things they have not been trained to ignore, they are more likely to have issues. Additional training in the presence of wolf scent might help them to be able to maintain their composure better.
Some people are like Slinkies - not really good for anything, but you still can't help but smile when you see one tumble down the stairs.
A gun should be a tool in the hands of a deadly weapon, not a deadly weapon in the hands of a tool.