This is another great example of the fact that their teachings are abitrary. Don't indulge in thrill sports because there is a chance you might get hurt or die and this would show a lack of appreciation for the gift of life. Of course, under no circumstances is anyone to accept a blood transfusion because this would show a lack of appreciation for the SYMBOL of life, at the probable expense of actual gift of life.
Tortured reasoning? Speciuos logic? Perhaps Paul said it best: "artfully contrived false stories..."
More to your point, 5 individuals personally known to me have been killed in field service in my congo in the last 10 years. One was killed on her way to a Circuit Assembly. A sister driving in feild service killed a pedestrian during "evening" witnessing. She thought she hit something, stopped her car, looked all around and saw nothing. Two days later a newspaper story reported finiding the body of a woman on this road. She called the police and got some info, put two and two together, and after investigation it was determined that she had hit this woman but it was ruled accidental. These were all older people who were killed driving on country roads. These are real tragedies. I know of not one person who was ever killed sky diving. Not one. I personally have 32 jumps to my credit. It is a very safe sport. They just want to control everything and every decision a person makes in his life.