Nope, an APJI which was the Army Assistant to the PJIs and we dispatched and jumped Balloons etc. I month course at Abingdon before No 1 PTS moved to Brize Norton which is similar to PJI course (in fact trained alongside PJIs) re instruction on all phases of parachuting from prep, flights, aircraft drills, exits, emergencies, landings etc, as well as all the hanger and training eqpt used to train troops.
On balloon days we used to jump dawn to dusk then do some night jumps, depending on how many chutes available you could average 7 to 12 jumps (officially only supposed to do max 7 before jump happiness creeps in lol) also used to throw troops out then follow them out the cage.
Happy days
Gary