This is not new. I have a few German cousins in Aviation. One of my cousin was an aviation pioneer, but I won't say a name here. Let's say he died doing what he loved. His name is on Wikipedia. Anyway, it's a very stressful job. It requires long hours which lead to fatigue and stress. If you want to become a pilot, it requires so many hours to develop skills to fly a plane. Jet lag doesn't help at all! It may look cool and glory to fly, but it's not really cool, believe me. I am told they have to take tests every 6 months if I remember. It takes a special person to know how to cope with stress.