As NASA and SpaceX prepare to fly another crew to the space station, engineers are fixing a leaky toilet on the spacecraft

Chari, an Air Force colonel and a test pilot, will be joined on the Crew-3 flight by Kayla Barron, a Navy lieutenant commander who served on a nuclear submarine, Tom Marshburn, a physician who has flown to space twice before, once on the space shuttle and once on the Russia Soyuz, and European astronaut Matthias Maurer, an engineer from Germany.