In the 1930's , My great uncle George , was the test pilot for a parachute made in a Connecticut factory. Once the design , and testing , was completed , that design was the one used by our Airborne troopers , that jumped into France, June 6th 1944. He said the only time he ever had a failure , was he jumped from a biplane , giving a demonstration at a Cleveland , Ohio air show. He got tangled up in the chute lines , landed upside down on his head , with a leather helmet. He was in hospital , in a coma for 30 days , but recovered. We never asked what he was paid for all the test jumps , but to my knowledge , he had enough money that he never worked.