Here. Make sure you read the comments. SFD had a call last week for a medical call, got there and it was a fire call. This kind of thing happens a lot. If this call had happened next year, the crew would have had to go back and trade their pickup truck for their engine. In the minutes following, would the person who called have lived? Would her house have burned down?
Again, Why do firefighters, all over the world, take a big fire truck on medical calls? It's a very simple answer. And in other places, when citizens ask the question, they get the answer.