The heater is on, that annoying hum where you adjust the compromise of noise to the correct delivery of heat. Just enough to keep you warm but not too much to make you over sleepy. My Police partner Chris is driver today. He and I haven’t said anything for a couple of minutes as the fatigue is setting in quite strongly now at 5.30 on this otherwise relatively quiet end to the night shift. The dull glow from the Police dashboard display buttons illuminated, waiting to be pushed into life and throw their red and blue lights around the countryside surrounding the car. Every push means a new emergency, means someone is in need of help, and they hope it will come soon.