Rare cockpit footage from the United States Air Force offers an inside look at the Rockwell B-1B Lancer during high-speed flight as the aircraft pushes beyond Mach 1 and enters the supersonic regime.

The B-1 is the only supersonic bomber in America’s military arsenal. While it doesn’t carry nuclear weapons, it is still intensely lethal. We took a rare test flight. B-1 bomber with Forbes writer Jim ...