Chuck Yeager had broken ribs when he broke the sound barrier in the x1 for the world’s 1st time. He said from falling off a horse, but who knows. I like to think there was whiskey involved. He didn’t tell anyone because he’d get grounded and he wanted to fly it. I heard him tell the story live in person once as a teen, what a treat. Him and Bob Hoover, those guys have crazy pilot stories