This American experimental supersonic aircraft could slash coast-to-coast flight times — and silence the sonic boom. Lockheed Martin Skunk Works, in partnership with NASA, successfully completed the first flight of the X-59, a revolutionary, quiet supersonic aircraft designed to pave the way for faster commercial air travel.  The X-59 took off from Skunk Works' facility at U.S. Air Force Plant 42 in Palmdale, California, before landing near NASA's Armstrong Flight Research C