Have you seen certain prevailing factors/personality types? How about suicide attempts. Maybe it doesn't happen often but I know it does happen. No, I'm not asking advice on how not to wash out-just what you have seen? I hear it is easier to pass than it used to be but everbody has a different motive for joining and "easy" depends on your gauge of what is "difficult". I imagine some truly want to be there but some(maybe just a few) do it just to impress others-something that would make it difficult to endure the pressure.