three man in a basket

A pilot noticed a ballon which seemed to be making for a Royal Air Force Station nearby. He informed the station at once, but no one there was able to explain the mystery. The officer in the controls tower was very angry when he heard the news, because ballons can  be a great danger to aircraft. He said that someone might by spying on the station and the pilot was ordered to keep track of the strange object. The pilot managed to circle the ballon for some time. He could make out three men in a basket under it and one of them was holding field-glasses. When the ballon was over the station, the pilot saw one of the men taking photographs, Soon afterwards, the ballon began to descend and it landed near an airfield. The police were called in, but they could not arrest anyone, for the basket contained two Members of Parliament and the Comanding Officer of the station did! As the Comanding Officer explained later, one half of the sation did not know what the other half was doing