He could be shouting at his computer but it is still concerning. It's not just a "oh s***" , it goes on and on for 5 minutes sometimes, usually "oh my f 'ing God!". Whatever he is reacting to is over the top on a regular basis. I guess my concern is that he may be doing this with people or losing his mind or building to something. Don't we all have a responsibility to prevent catastrophes? I just don't know what to do. I certainly don't feel safe to speak to him in person and an email just doesn't have the same impact.