tizer (31)in #plane • 7 years ago • NoneBoeing Hyper-sonic planeBoeing has recently released art work of a proposed hyper-sonic plane to replace the already retired SR71 Blackbird. See the link below.tizer (31)in #novice • 7 years ago • NoneNovice needs helpI've been told I'm slow on the pick up and this is quite true in particular when it applies to Steemit. I've been a…
