Columbus training at EAC for Expedition 19

NASA astronauts Michael R. Barratt, Expedition 19 flight engineer, and Jeffrey N. Williams, back-up for Expedition 19, during an introduction of Cabin Smoke Detectors in the air ducting of the European Columbus laboratory (Columbus System & Payload Training) with Columbus Instructor Kirsten Bischoff in the Columbus laboratory mock-up at the European Astronaut Centre (EAC) in Cologne, Germany.