Answer:
"I'm a nurse. I had a patient who was doing great after a relatively minor surgery and was set to be discharged the next day. I just had a bad feeling about it ever since my shift started. I kept checking in on him and he said he was completely fine. He went for a walk around the unit with the help of an aid. I offered to walk him myself. Glad I did. The guy passed out just as he was getting back to his room and was in a very serious and dangerous heart rhythm. If I wasn't there, we might not have been able to save him the way we did!"