All over the news: A bipolar patient was shot and killed by air-marshals after he was found running up and down the plane aisle, yelling that he had a bomb in his bag. His wife was pleaded that he was mentall ill, and reported that he needed medication. Authorities would not confirm that he had a mental illness. The entire flying experience is fodder for psychosis and thought disorders. Lots of paranoia, being searched, funneled into the plane, constant directions, demands to remove your shoes, being sniffed by dogs, etc. I'm surprised this doesn't happen more often.