My earliest memories are of German Shepherds. We always had at least one. At one time my Dad had three. Pretty sure I learned to speak dog lingo before human language. I may get a Belgian Malinois next. A longtime friend of mine, Angie, breeds them and also GSD's. We got our last 3 GSD's from her as gifts. She knows I love canines that have a very intense drive and her Belgian's are super intense. I call Belgian's gonzo dogs!
You might enjoy this video, shot years ago, of Carli's father (Chico) doing an apprehend of a guy with a gun (one of the trainers).
Angie, a longtime friend since we were youngsters, is the one who trained him. She is handling Chico and issuing the commands. He was a LEO who was wounded on the job. He had to retire early from regular field work as a result. He could scare the crap out of people with his looks alone but was a big baby with those he knew well.