 The two astronauts who went to the space station on Boeing's Starliner spacecraft say they're confident it can return them to Earth safely. They should have come back weeks ago, but helium leaks and thruster failures have complicated the plans. CBS News space consultant Bill Harwood. You have to keep in mind that this is the first piloted flight of the Starliner. They've never had it up with people during a full-up mission. They're really kind of trying to wring it out. They think the thrusters will actually work fine.