Worst Seat in the House

[Eva Elisabeth]

How often does it happen that even though someone's environment observes someone might suffer from such as PTSD in a way that one fears he might become dangerous to others or himself, a tragedy finally happens because he/she had refused treatment? Can you act against someone's will before something happens, only based upon "suspicion"? Can you force someone to get diagnosed?

I was also thinking of the crash of a German aircraft earlier this year that was deliberately caused by the co-pilot. His environment previously had observed he had suicidal tendencies.