American Shepherd Schutzhund Bark and Hold

Here is my boy, Dink, demonstrating the Bark and Hold.
The idea is to keep the Intruder guarded until I arrive to deal with the situation.
If the Intruder tries to escape or attack, then Dink is permitted to Bite him.
Once the Intruder is apprehended, I order the Bad Man to drop his weapon and surrender. If he complies, I tell Dink to release his Bite and come with me.