I'm sure he didn't expect a jet engine at an airport that mostly saw crop sprayers take off. But still, you would think anyone into aviation enough to build his own airplane would have been okay with an F16 being tested a few minutes a couple of times. If I were him, I would have walked over to see what was up, because we were definitely out of place there. If he did that, I would have talked to him and given him a tour. OTOH, I'm half deaf because of those things.