What should I do when I am walking my dogs in the early morning and we are threatened by other dogs that are running loose?

Dear Mr. Frawley,

I have an older (humane society dog, do not know his exact age) cross-breed, he is at least eight years old. He is part Husky and possibly GSD. I also have a two year old GS female. I go for walks often, I try to go early in the morning so I do not run across other loose dogs. Mine are ALWAYS on a lead. My dogs have been attacked several times by other dogs running loose. My male (he is neutered) is an Alpha male (or least I thing he is), he was dog aggressive until I took him to obedience class. I had to learn how to show him I am the leader of the pack. Once I understood this concept and applied the proper stance of letting him know I was the leader and I would not put up with this behavior, it stopped. He will not back down if another dog shows any sign of aggression toward him, me or my other dog, as it should be. My female has a strong play drive and I am training her for search and rescue. She has a wonderful temperament, typical for GSDs. She is not aggressive, in fact she is very friendly when I introduce her to someone. She does read me of course, I have not the slightest doubt that in a situation where she feels I am nervous, or frightened, she would react accordingly. Both of these dogs are 70+ lbs. When another dog approaches us, I have my hands full with keeping both of my animals under control with their leads, while at the same time trying to get the loose dog to leave us alone. What do you suggest I do in these situations? Stand my ground and try to fend off the other dog, or try to leave the area, dragging my two dogs away? I usually try to walk in residential areas, and often I can walk in the middle of the street because of no traffic during the early morning hours. (Thanks for giving us so much information on being responsible dog handlers.)

Sincerely,
Patty