So were Air Force. My favorite was at Travis, circa 1972. A pair of stock P-51s (1 D & 1 H) did a high-speed ground-level flyby.
The D ended in a climbing chandelle. The H went vertical.
I went to an airshow at Travis. As I crawling my way to the parking area a B1 bomber flew over head shaking the car as its four engines roared. I liked that show as they had a lot of vintage jets including a MIG-17 and Hawker Hunter. A C17 put on an impressive performance showing off its STOL capability.