Firetruck Epically Drifts Across Four Lanes of Traffic

I was driving a loaded trailer to be dropped off in Dallas, TX. I had gotten into the city and joined the already rush hour traffic before getting to the event in the video. When I started hearing the siren of the fire truck I looked around my mirrors to try and see where it was coming from and see how traffic would get out of the way. I saw it in my passenger side mirror coming onto the freeway from the on ramp so I slowed down as I would have impeded the fire truck from getting onto the freeway. I didn't expect the rear end to swing out into my lane and my reaction to that can be heard in the video followed by laughter. Soon after it made it's way across all lanes I turned my camera off. I didn't want the loop recording feature of it to overwrite the clip. I figured other truckers wouldn't mind seeing the clip on the Facebook pages I'm in.