You can find the fact sheet on their Web site. The Web site address for AFB is listed in the Additional Resources section of this document, along with other relevant Web sites. Dog guide is the politically correct term. Generally, a blind person trains with the dog at the center for a month. Dog guides help their blind partners by walking the person around obstacles, like telephone poles or street barricades.
Safety is the dog's responsibility.
Dog guides wearing harnesses are at work. People should not pet or otherwise distract a dog guide from his job. Ask permission if you want to pet the dog. Dog guides are invisible. At least that's the way you should act if you're wondering how to behave when you meet a blind person with a dog.