 The two NASA astronauts who took the first crewed Boeing Starliner flight to space are three unexpected weeks into their stay on the International Space Station due to Starliner problems. CBS News space consultant Bill Harwood says some testing is being done in White Sands, New Mexico to give the astronauts more data. They're firing a thruster just like some of those that failed on the Starliner earlier to make sure they understand exactly what might have caused that. And if they have to, they'll change the procedures the crew will use when they undock from the station and come home.