Imagine if you will this hypothetical scenario:
You and your roommate have just graduated EMT school together and go to work at competing ambulance companies in the same city. He works for HIS ambulance service, and you work for YOUR ambulance service. Both services have similar fleets, similar deployment patterns, and similar call-volumes. In fact, there’s really no way to tell them apart other than the fact that the HIS ambulance service uniforms are sickly green jumpsuits, and YOUR ambulance uniforms are Macho Blue Shirts with navy blue pants.