It should not matter if the person refused to identify himself. If he had a ticket issued to him and was attempting to transit an airport checkpoint, his identity could easily be obtained from reading that.

The only thing that TSA should be concerned with is its mission of keeping WEI off of aircraft. Assuming that this person would have subjected himself to appropriate inspections of the same nature as other passengers, he presented no risk beyond that of any other passenger transiting the checkpoint at that time.

When will TSA learn?