I have to say, emergency medicine is definitely one of my favorite specialties; save the greatest amount of lives when it is most needed. The bus crash example reminds me of last year when I was on-call at the emergency room, and there was a collision between 2 buses with 25 wounded. Interns from pediatry and gynecology had to come over to help, we were really over our capacity, but we were able to save most of the patients, it was very challenging but so gratifying.