Pilot Chris Bain in a cockpit of U.S.  Boeing B-707 OC-135B Observation Aircraft on the military airbase in Pardubice, Czech Republic, Tuesday, July 31, 2007,  where a 31-member team of U.S. experts began training for surveillance missions to check military facilities in the Czech Republic within the Treaty on Open Skies. (AP Photo/CTK, Alexandra Mlejnkova) ** SLOVAKIA OUT ** 