Para-Plotter -- Just in case she makes an involuntary 'take off' Women's Royal Air Force Corporal Joan Eslick (from the Isle of Man) wears parachute harness while pinning symbols to the 50-foot map in the Operations Room at Coastal Command headquarters at Northwood, Middlesex. Wraf plotters wear the harness as a safety measure while plotting the course of convoys and aircraft during exercises. November 3, 1951. (Photo by Reuterphoto).