 CBS News space consultant Bill Harwood says thruster testing is taking place on Earth to send info back to the two astronauts at the International Space Station who are trying to return to Earth on Boeing's Starliner spacecraft. They're both confident that they've got a safe vehicle, and I think we have to take them at their word for that. We'll have to wait and see how the testing comes out. CBS News brief. I'm Jennifer Kuiper.