&quot;Have you noticed how 30-foot, $1 million+ fire engines show up to minor traffic accidents and first aid calls? There&#x27;s a reason (they need to look busy).&quot;<p><i>(Disclaimer:  I am a volunteer firefighter in California)</i><p>They do that because they can&#x27;t be caught without the engine if they get an actual fire call.  They would leave directly from the accident&#x2F;medical&#x2F;CatInTree in the engine and go directly to the fire.<p>That&#x27;s why you see them drive to the grocery store in the fire truck.  You can&#x27;t wait for them to go back to the firehouse to get the engine ...