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 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.