Is the U.S. Air Force (USAF) about to get the world’s fastest ever aircraft with speeds of Mach 6.0, christened the SR-72 “Darkstar” and built by Lockheed Martin? And if so, then when?   It is difficult to provide authentic answers, even though the U.S. Air Force has been on record as saying that it has … Continue reading Invisible To Radars — Is US Air Force Set Fly World’s Fastest Jet By 2030 That May Be Impossible To Track?