ownerof3dogs:

Maybe Ryan can explain it better than me.
From what I know, William Koehler was a
well known dog trainer many years ago who trained several animals for T.V. and movies.
He wrote a book on his method of
dog training called "The Koehler method of Dog Training" he also wrote a book I believe on Guard dog training as well.
Part of his method of training is that your dog should be trained so the he will obey your first comand, no matter what temptations or distractions may be present.