An operator of Swiss air traffic control firm Skyguide monitors airplanes at the Skyguide monitoring...
An operator of Swiss air traffic control firm Skyguide monitors airplanes at the Skyguide monitoring centre in Duebendorf, near Zurich, April 3, 2013. Skyguide held its annual news conference today. REUTERS/Michael Buholzer (SWITZERLAND - Tags: TRANSPORT BUSINESS)