History Schmistory: October 1. Back off, sound!!

1969: A Concorde turbojet-powered supersonic passenger airliner breaks the sound barrier for the first time. Sound barrier calls shenanigans and demands a rematch.

U.S. Navy F/A-18 within the sound barrier By Ensign John Gay, U.S. Navy [Public domain], via Wikimedia Commons

U.S. Navy F/A-18 within the sound barrier
By Ensign John Gay, U.S. Navy [Public domain], via Wikimedia Commons