What is the top secret US bomber?
What is the top secret US bomber? In December, Northrop Grumman unveiled the B-21 bomber for the first time, although that reveal only showcased the front of the aircraft. Technical details of the plane have so far been highly classified. The Air Force plans to buy at least 100 B-21 stealth bombers by the mid-2030s for about $80 billion.
What is the fastest plane in the world?
The North American X-15 may be the fastest plane in the world, with speeds at 4,520 mph and Mach 5.93. It's an experimental aircraft used and powered by NASA and USAF.