landing  of the Fireflash aircraft. On the crafts initial landing one of the  elevator cars suddenly breaks free and slams into a row of parked  planes, destroying them. This scene came about because during  filming one of the model cars indeed broke free and slid off the  miniature runway. The special effects crew and  Gerry Anderson (I) (qv) both agreed that this "gaffe" would work  in the context of the story, so Anderson wrote this setback to  International Rescue into the plot.