I was a paratrooper and I never yelled “Geronimo” when I jumped. We were taught to count - “one one thousand, two two thousand...and so on) as away of determining when the chute was to open and if it didn’t begin to deploy the emergency chute (keep in mind we were jumping from a thousand feet and you did not have much time if the main did not open).
You used the old C119 in Jump school right? Yes we counted to 1003. Between 1002-1003 it usually really grabbed one.
Exactly, one thousand one, one thousand two, one thousand three, check canopy, bicycle out of your risers were twisted, feet and knees together and notice how quiet it is floating down to earth.