Ahh yes, 'Credible Sport', most impressive; right up to the moment when the rockets went whoosh-bang as per the program, but 30 feet too high.
Not "per the program", human error. The forward firing rockets were manually initiated by the FE - a bit too soon on the last flight for ship #1.
But my reference to JATO was to the production version as delivered by Lockheed on all C-130E/H1 frames. Also used by US Navy Blue Angel's Fat Albert and by LC-130 aircraft in antarctic as well.
Whilst never used by RAF in service, it was tested by RAF crews for Albert...one of the spent canisters used to be in 47 SQN (SF), IIRC.