The SR-72 jet is being developed by Lockheed's Advanced Development Programs (ADP), also known as Skunk Works, just like its predecessor. The targeted speed isn't Mach 10; it's Mach 6 (4,603.6 mph ...

The division has been tasked with making the SR-72 fly twice as fast and higher than the original, which is no easy feat given that the original reached a top speed of Mach 3.4 (2,300 mph ...

As reconnaissance needs evolve with advanced satellites, the SR-72's speed and optional pilot feature could offer unmatched rapid response. -However, it faces potential threats from advanced ...