Pointing a weapon at another person is assault, but there are defenses for it. The captain of the tribal police and the other officer do not have any such defense, as there was no crime taking place, nor was their personal safety in jeopardy. There was no mention of loaded weapon, etc., in the truck. WDFW and JCSO said there was no issue, otherwise they would have cited them.

Being off res, the tribal cops were just another US citizen.

There is a reasonable time thaht LEO's have for a "Stop & detain", but that is 10-20 minutes, or at least that is what I was taught in the academy. The captain should certainly have known better.