The streets are jammed with traffic so you leave your car behind and jump on your bike. You pedal through the ruined streets full of dead and wounded people. Near the epicentre nothing is left and you find no survivors. Instead you notice a burning sensation on your skin. You have exposed yourself to high levels of radiation and in the next few days you will develop acute radiation sickness. You will need intensive medical treatment, if you manage to get to a clinic that still has room quickly enough.