“His explanation for why no one responds to him is that there’s got to be a conspiracy,” Jackson said by phone Wednesday afternoon. “The real reason is he’s just kind of a fringe guy that nobody pays attention to.”

Two years ago, Hindi’s group infiltrated the event near Altus and released video that attracted the attention of the Bureau of Reclamation — which, it turned out, owned the property but had not authorized its use. The result was some sharply worded letters about “countless rotting pigeon carcasses” and other refuse left on the premises.

In 2015, the day’s activities — which Jackson said also include a dove hunt and clay target shooting — moved to private property in Greer County.

Hindi’s group sent up a an octocopter — an eight-propeller unmanned aircraft, or drone — that subsequently crashed. Hindi said the drone was shot down — video taken by the drone seems to support this — but Jackson and others associated with the event say they don’t know what happened to the aircraft.

Ben Kimbro, a candidate for Tulsa City Council and a member of the Governor’s Council on Unmanned Aircraft, attended the 2015 event and briefly talked to Hindi’s crew.