I trained military dogs, for a long time.
I specialized in attack dogs, they are controllable, that they need to, but I can seriously tell you that when the leash is off, and they are in full tilt they will trash whoever is in front. Some dogs in the excitement will even nip the handler, if teased for too long. Not nice but it happens.
We got our GSD's bought from Germany and Poland, they would be 18 to 24 months, and they would have passed a test very similar to what Cafib has.
The dogs are not expected to go in public, not walk down a street and will stay with one single handler for a minimum of three years.
I still believe that Filas would fit that bill perfectly, we cherish dogs that are one with the handler, but controllable.
Yes, what the Guy on the video did could have been better, but the Fila performed as I would have expected a dog to perform. It saw the camera guy an went for it? Great! It is for the handler to control the dog and be aware of what is going on, the dog just sees a situation of threat and it needs to protect the handler.
What needs to be understood is that there is a big difference between the PP work you see on a civilian dog, a police dog and a military dog. They are not the same thing. At least not for me.
Many of our colleagues after the force they go and join the police, also on the k9 units and they seriously have to tone down what the dog is allowed to do, and the sort of dogs they have are of a different temperament.
Not sure how it goes in the US, but in Portugal that is how it is.
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Luis
@ghostsword