Both are costly, both preventable. You just need to know to look for clues. They have a lot in common...except perhaps for the price of the outcome. Why do airplanes crash? The answer is not as obvious as you might think...like, the aircraft decelerating at a high rate of speed...hitting something hard or running out of gas, etc. That might be the final problem. But, getting to that point is almost always a series of failures and/or poor decisions on the part of the pilot. And, had anything been done along the way to break the chain of events, the accident may likely have been prevented. For instance, when you review the famous JFK crash,