Climb to 36,000 feet as they pass through german airspace. at the same time, bashkirian airlines is en route from moscow to barcelona. the russian tupolev airplane is being used for a school trip. on board mostly children and nine crew member. the flight enters german air space flying at 36,000 feet, the same as the dhl cargo jet. the two airplanes are on a collision course. despite being over germany, the airspace is controlled from zurich by the private swiss air space control company skyguide. air traffic controller peter nielson is the only person handling the airspace at the