Patrick, such a long time ago! (in Buttwil with Sandra Lachat)... Happy you're still flying, alive and well. Keep it that way! Best regards from "Gibolin".
Everytime I see videos like that, next I do is google the name, because I want to know if that person is still alive. Most of the cases they don't. Don't misunderstand me. I'm a former skydiver and now I do aerobatics. But when I see that wingsuit flights near ground and/or between trees I know you can wait for it. 🤷🏻♂️ But like we say in Germany: jedem das Seine...
I always assumed that it was a fighter jet's engine sound that I was hearing as they roared above me at airshows, etc. Apparently not! It's "just" the sound of the object moving through the air at high speeds. Amazing.