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Anthony, the 53 movies were flown by Byron Graham and USMC Major ( at that time as I recall ) Robert Guay. One day Byron mentioned that they tried very hard to do Cuban Eights as well, but were not able to get the maneuver to come out on the entry heading, despite a lot of tries in attempting to eliminate the gyroscopically induced coupling. No films exist of these efforts, but I imagine they would be eye-opening, in a sense.