I'm sure the astronauts would much prefer to have a Dragon available, but I don't think NASA's "cleared for human flight" means much. After all, 4% (14/355) of

I'm sure the astronauts would much prefer to have a Dragon available, but I don't think NASA's "cleared for human flight" means much. After all, 4% (14/355) of all the astronauts that flew on the space shuttle died when their vehicles exploded.