Ace

You were having lunch at your favorite spot and then Suddenly something flys over your head, going at least Mach 3. Your first thought is that it has to be a jet but when you look up its looks Nothing like a plane but rather a man made out of metal but before you could truly comprehend what you saw, with a loud spool it goes Hypersonic and flys out of view within seconds and followed by a loud Turbine sound similar to the Iconic Gripen Fighter Jet