It always sux. I watched a guy die of a heart attack at work a few years ago right in front of me. I immediately called the paramedics since he fell and was bleeding all over his mouth.
First aid training is a plus if you ask me as well. I think the hands on is a lot more difficult for the mind than most people would envision for sure. I dont know how many wounded or dead carcasses I saw when in the military back in Africa..