SPACE STATION SINCE JUNE. MARISSA PARRA HAS THE LATEST. >> Reporter: TONIGHT, A STUNNING ANNOUNCEMENT FROM NASA. >> NASA HAS DECIDED THAT BUTCH AND SUNI WILL RETURN WITH CREW 9 NEXT FEBRUARY. >> Reporter: NASA ASTRONAUTS, BUTCH WILMORE AND SUNI, THE FIRST WITH THE CREW, BUT THEY WERE ONLY SUPPOSED TO BE IN SPACE FOR A WEEK. NASA NOW SAYS THEY WILL RETURN FROM THE INTERNATIONAL SPACE STATION EIGHT MONTHS PAST SCHEDULE TON A SPACEX DRAGON CAPSULE, BOEING'S BIGGEST COMPETITOR. >> THIS HAS NOT BEEN AN EASY DECISION. >> Reporter: THE SPACECRAFT HAS BEEN PLAGUED BY HELIUM LEAKS AND THRUSTER ISSUES, NASA TESTING TO FIND OUT WHETHER STARLINER COULD FLY HOME WITH BUTCH AND SUNI ON BOARD, BUT THE RISK, ULTIMATELY TOO HIGH. >> WE HAVE HAD MISTAKES DONE IN THE PAST. WE LOST TWO SPACE SHUTTLES AS A RESULT OF THERE NOT BEING A CULTURE IN WHICH INFORMATION COULD COME FORWARD. >> Reporter: BOEING RELEASED A STATEMENT SAYING THEY CONTINUE TO FOCUS FIRST AND FOREMOST ON THE SAFETY OF THE CREW AND SPACECRAFT. >> HERE WE ARE IN THE FRONT OF THE INTERNATIONAL SPACE STATION. >> Reporter: NASA INSISTING BUTCH AND SUNI HAVE PLENTY OF SUPPLIES TO GET THEM THROUGH, AND CONFIDENT DESPITE THE SET BACK IN STARLINER'S FUTURE. SENATOR NELSON, HOW CERTAIN ARE YOU THAT BOEING WILL EVER LAUNCH STARLINER WITH A CREW ON BOARD AGAIN? >> 100%. >> MARISSA PARRA JOINS ME NOW. SO WHAT HAPPENS NEXT? >> Reporter: GOOD QUESTION, THAT SPACEX DRAGON CAPSULE WILL SAVE TWO SEATS WHEN IT LAUNCHES TO THE INTERNATI