Here are a few of the experimental planes, most of which I had never heard of. Some of them were only flown a few times. The first one is called the "Bumble Bee" and is only 9 feet long. It has a maximum speed of 180 mph, but a range of only 20 miles....an exciting 20 miles.
Former Air Force One planes were on hand, including the one used by Presidents Kennedy and Johnson in the 1960s.