Didn't watch the video, read an article elsewhere.Words.
Not fit for mixed company or strangers.
"No such thing as an unarmed encounter with an officer, ever....."
That's training from his point of view as a cop. They teach that no matter what, a contact is potentially armed. So consider them as armed and act accordingly.
He said that even if the suspect is not armed, we are, so it is never an unarmed encounter.