fall. The  camera for these sequences was mounted on the helmet of another  skydiver, and a few shots are of the cameramans own arms and legs.  Stuntmen Jake Lombard (qv) and B.J. Worth (qv) wore parachutes  concealed within their suits. The "parachute" they fought over was  actually a dummy chute which had to be removed before the stuntman  could use the real parachute underneath. Stuntman  Jake Lombard (qv) would don and remove the dummy chute up to  three times in a single jump. The actual parachutes used by the  stuntmen had both a main and reserve chute concealed within the  suitcoats. A breakaway seam ran down the backside which allowed the  parachute to be opened without the need to remove the coat. There  were only sixty to seventy seconds of freefall time between when the  stunt performers exited the aircraft and when they had to activate  their chutes. After factoring in the time needed to get the  performers and cameraman into position after leaving their plane,  only a few seconds of film could be shot per jump. Therefore, the  entire sequence required 88 jumps and five weeks to film, just to  produce the two minutes of footage in the final film.