that we know if. i'm convinced there is something newer and faster. satellites are known and can be hid from. the sr-71 was not stealth because a) stealth was not invented yet and b) it could out run missiles trying to shoot it down. i think they have a new secret weapon. after all, the sr-71 project started in the late 50s or early 60s i think. the public didn't know anything about it until the 70s.