The pilots were out practicing their stunts for the thousands expected to arrive over the next fews days.
That's the reaction Captain Patrick Pollen gets. He flies a CF-18 for the Royal Canadian Air Force. Pollen's performing in his first air show in Kentucky in a plane that to call fast would be an understatement.
"It goes about 2,000 KM an hour," he says. "That's about 1,600 miles per hour."
Performers spent the day practicing maneuvers and tricks.
"We even do what we call a square loop, which is a unique capability of the FA-18's ability, where we square off the corners at maximum speed to show what it's really like," he says.
To do things like square loops takes a lot of practice, skill, and safety. Pollen says they fly their planes at half speed.
"If it broke the sound barrier, we'd shatter all the windows and I don't think people would think that's funny."
Pilots like Pollen says they do it not for the thrill, but for the people.
"We inspire people," Pollen says. "That's the intent of the day. Inspire people to reach for their dreams."
"I do a slow pass at about 150 km an hour, that's 120 miles per hour, and that's what I do. I look for smiles."