Robert E. (Bob) Castle, Deputy Chief for ISS, Flight Director Office, is pictured in the station flight control room (BFCR) in Houston’s Mission Control Center (MCC). At the time this photo was taken, astronauts Kenneth D. Bowersox and Donald R. Pettit, Expedition Six mission commander and NASA ISS science officer, respectively, were participating in the mission’s only scheduled session of extravehicular activity (EVA).