First person to break the sound barrier (intentionally).

The first person to break the sound barrier did so intentionally.

Weren't there a few fatal "death-dives" in World War II that may have broken
the speed of sound while in the invisible clutches of compressibility?
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"