Orion will have a lower flight rate than the shuttle, so will nasa reassign some of the astronauts to other duties or even let some of them go? I'd imagine the mission specialists would be the most vulnerable; orion won't be doing shuttle style science missions and it won't be constructing stations either, so what role do they have? They would still do the six month iss missions, but that only gets through about eight MS's a year. After the ISS is deorbited and, if by some miracle we also get the moon missions, you still have the problem of the low flight rate vs large astronaut corp. Does anyone know how NASA is going to tackle this issue?