And anyone is allowed to use force to deter a threat, not just law enforcement....Typical --seeing , remembering and accepting only what you want to see, remember or accept.
From your own link:
"A better knowledge of aviation issues among law enforcement officials may have produced a better result for Fleming. Griffin said she had to tell the officers on the scene to clear out the runway, and one officer talked about commandeering the airport.“He was running around, the one guy that was commandeering everything, saying,‘We were going to shoot him down,’” she said. "
Note also that the idiot officers, after demanding that Fleming land, had to be told to clear their vehicles off the runway so he could land. Again: THESE IDIOTS ARE OUT OF CONTROL
"Section 16-11-440.(A) A person is presumed to have a reasonable fear of imminent peril of death or great bodily injury to himself or another person when using deadly force that is intended or likely to cause death or great bodily injury to another person if the person:
(2) who uses deadly force knows or has reason to believe that an unlawful and forcible entry or unlawful and forcible act is occurring or has occurred."
In the case of the glider over a nuclear power plant, the glider pilot should be thankful they did not shoot him down.
Threat till proven otherwise.