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NASA astronauts prepare to return to Earth

After nine months in space, NASA astronauts Butch Wilmore and Suni Williams will return to Earth later this month. Their replacements are expected to arrive at the International Space Station next week. In a press conference today, Williams said they have a mission and every day is interesting because they're up in space but that it's hard having family on the ground not knowing exactly when they're coming back. NBC News' Emilie Ikeda reports.