Helicopter Used In Civil: Defense Training Operation -- Nurses and Civil Defense workers dealing with "casualties" at the demonstration this afternoon, while the helicopter which was used to assist in the demonstrations, flies overhead. The Rt. Hone Sir David Maxwell Fyfe, Q.C. M.P. Secretary of State for the Home Department, today opened the Bully Fen Rescue Training Ground at Hackney, East London, after which demonstration was given by members the Civil Defence Services. April 15, 1953. (Photo by Fox Photos).