, —: wre The feircraft had to be positioned within a very clo position in space relative to the device so that the fixed camera mounted on the aircraft could photograph the detonation, As the normal airborne radar would not scan above the aircraft and since the target was a free moving body in the upper air currents, a special installation of an E-4 radar set with an upward field of scan was made on these aircraft: and a beacon installed in the equipment carried by the balloon. This equipment, unfertunately, never functioned properly and an alternate method of positioning had to be arrived at. Through much practice, a system was devised where the balloon was tracked by optics and by radar aboard the USS BOXER and its position passed to the Task Group 7.) Controllers, who plotted this position on their radar scopes. The controllers in turn vectored the 3~36!s to the proper position relative to the balloon and maneuvered the aircraft into their proper H-Hour positions, The pilots of the aircraft also were able to check the AOC positioning by flying formation on the balloon visually while the navigator checked for proper slant range from the target through optical instruments. Due to the flash blindness hazard, the visual and optica] observations had to be abandoned just prior to time zero and final positioning done by the controller but this ingenious method of positioning the aircraft against a position in space relative to a moving target proved highly effective and all scientific requirements were met. The positioning problem was not so great on the TEAK and ORANGE shots. On these events, a large nuclear device was detonated after being carried to heights of 250,000 and 125,000 feet by a Redstone Missile. sien was proegrammmed to occur within a fixed envelope in space. The detonaOne (1) aircraft positioned itself by using its own airborne radar while the other was positioned by an MSQ-1A radar on the ground. 95 AFWL/HO Air controllers monitored Ply ‘4 =_——ae