Why was the Concorde the only supersonic jet in commercial use? Are there any reasons that would prevent another supersonic jet from being used in the future? - Quora
When the Concorde supersonic turbojet roared into the Bay Area
American Airlines places big bet on supersonic travel - CBS News
Speed for need: Why American Airlines is buying 20 new supersonic jets - Dallas Business Journal
First look inside new supersonic jet that could fly from London to New York in 90 minutes | The Sun
Startups and NASA working to return passenger supersonic flights to the sky - 60 Minutes - CBS News
150 Sonic Speed Photos and Premium High Res Pictures - Getty Images