Shuttle's toilet requires special training: Mike Massimino helps answer the one question he and other astronauts get asked most often: "How do you 'go' in space?" Mike catches up with STS-132 Mission Specialists Steve Bowen and Piers Sellers as they get some "refreshers" on the use of shuttle Atlantis' "Space Potty." (Training includes an "alignment camera.") Bowen, Sellers and their four crewmates are scheduled to launch aboard Atlantis for the International Space Station on May 14. The workings of a space toilet, on "STS-132: Behind the Scenes, Vol. 1." (May 5. 2010)