I joined the RAF in 1977. At the time (being a sad and introverted sort of character) I worked out that based on the historic loss rate, my chances of living through 16 years as a fast jet pilot were about 4 in 5. I did the sum again at the end of the first 16 years and the answer was about 99 in 100. Now I'm too old to bother doing sums.
Sven