Twenty minutes later, he called back reaffirming they are not running their cannons at night. He also assured me that their air cannons could not be heard more than a mile away.

This is the point at which I would have changed my attitude to the situation quite dramatically. Given the opportunity to own up and simply apologize and fix the issue, the fellow just went full lie-to-your-face mode. What in the everloving heck is wrong with people?