Boeing's crew taxi returned to Earth from the International Space Station on May 25, successfully completing a repeat test flight before NASA astronauts climb aboard. It was a quick trip: The Starliner capsule parachuted into the New Mexico desert just four hours after leaving the orbiting lab with only a mannequin aboard. Aside from thruster failures and cooling system snags, Starliner finally clinched its high-stakes shakedown cruise two and a half years after its botched first try.