Actually I think you are wrong on the saluting. The NG soldiers are actually armed and in headgear. I seem to remember that in that case they would normally salute. The officer was probably not wearing his lid and would not have saluted someone superior to himself but would return the salute rendered to him. It is a sad indication of being out of service to long that I am blanking out on the rule. I would pull out my officers guide but is currently boxed up.
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Robert