This may be a dumb question but I'll ask any way. When it's cold and you have to deploy your k9 how do they act? Do they want to stay in the car or do they like to work no matter how cold it is?

Generally, K9's are not as susceptible to cold weather as us more frail humans. Most of the shepherd type dogs have a dual coat. An undercoat that gets thicker in cold weather. There are times when the handler can cause problems by keeping the dog too comfortable and not allowing the dog to adjust to the weather. This hurts more in the summer time when they keep the car like a meat locker than it does in the winter time. Generally, if it's safe, no necessarily comfortable, but safe for a human, it's safe for a dog. Secondly, the k9 team should be training in the cold, rain, snow, etc to be sure how the dog is going to react. It should not be a surprise.