I know this is an old post but I happened to stumble on it today.

Keep in mind that with all of your concerns with being questioned, the MP's at McGuire thwarted a potential terrorist attack this summer by aprehending a known terrorist at the main gate. My Brother inlaw was the actual MP who stopped the guy and got dragged ~200 feet when he tried to pull the guy out of his vehicle. He's OK and the suspect was taken into custody and is awaiting trial.

This happened a couple of weeks after the airshow and they had intelligence that this guy was in the area. The fact that they still had an airshow is pretty cool. We need to remember that these shows are a priviledge and not a right and we're fortunate that we get to be there. If that means I have to answer some questions, it's a small price to pay.