With protective arm covering, a police officer demonstrates how the dogs are trained to apprehend criminals. Because most people are right handed, the protective covering is used on the trainee's right arm and the dogs are trained to attack the right arm. Looks a little scary, doesn't it? Thank goodness for these dogs who really need the safety of those protective vests. We were told that the dogs are imported primarily from eastern Europe, especially the Czech Republic because that's where the "good bloodlines are." Earlier in August another policeman and his dog came to our neighborhood block party and the photos there demonstrate their gentle side, esp with childre. Some of the police dogs are outdoor dogs, but many of their human partners to whom they are assigned keep them in their home where the dogs are an integral part of the family. There is a strong attachment between the policeman and the canine partner.