 More troubles for the Boeing Starliner capsule after it launched June 5th, taking two NASA astronauts to the International Space Station in the test flight. Astronauts Sonny Williams and Butch Wilmore were supposed to return after a week, but issues with the capsule have stalled the return. Boeing's program manager Mark Knappi. We're not stuck on ISS. The crew is not in any danger. Knappi says they have to fix the helium leaks and thrusters before they set a return date. You're listening to ABC News.