Personally I think the primary issue is legislative. I think there are risks, of out of control drones, of spent shot falling in bad places, even of aircraft coming under fire.

There are also risks of doing nothing. It's a cost/benefit issue more than anything else, but legislative maybe has to come first: empower airport police to take action.

I think we're in an undeclared asymmetric war. Arson attacks, test runs, sovereign citizens being encouraged to take direct action against infrastructure. People are wierd, people are gullible, people are impressionable and people are angry and motivated. It's easy pickings for state actors to do arms length actions. "Here, take this smelly rag and stuff it under the nose of this person at an airport for a prank on secret camera tv" actually happened: it was a nerve agent.

Former soviet Republic nations flags being waved by .. pacific Island noumean independence rebels. Iranian agents paying Australian crime gangs to commit arson attacks against synagogues. This is not normal.