National Security Journal on MSN

SR-72 Darkstar: The US Air Force’s new Mach 6 hypersonic bomber?

SR-72 “Darkstar”: The Mach 6 Successor to the SR-71 That Could Also Strike Summary and Key Points: The SR-71 remains the ...

Neither Concorde nor Tupolev: This was the first airliner to go supersonic

Concorde and Tupolev are acknowledged as some of the first planes to break the sound barrier, but it wasn't them. Which one actually did it first?