Why is Joe Biden's German Shepherd out of Control?

Don’t think for a moment that German Shepherds are mean, untrainable, or stupid nothing could be further from the truth. In my experiences with my dogs, they are smart, protective, loving, obedient, family dogs and will do anything to please you as long as you show leadership and train them using positive reinforcement.
Commander the dog has attacked 11 times and bitten secret service personnel.
https://www.youtube.com/watch?v=XVUDjonZIDo

German Shepherd training blueprint.
https://www.youtube.com/watch?v=c9zbP90BMfc
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