Whilst stationed here in Germany, I got called to an RTA (Road Traffic Accident) just outside of the camp. It involved two cyclists. It was dark, both had no lights and both were travelling on the cycle path alongside a dark stretch of road running through a forest. Unfortunately, one was travelling the wrong way up the cycle path and because no lights were used, they both collided head-first into each other. One survived with heavy facial injuries, the other died a few hours later in hospital.
I kept thinking at the time, how could anyone die in that sort of accident? But it happens people. Oh by the way, both were sober.