On last Sunday 4 russian MiG-31 fighter planes run out of fuel during a routine patrol mission. So they were forced to land on the civil airport of Ussinsk in Sibiria. The intention was to refuel the fighters at ground. But the procedures needed to much time, so that the engines were to cold for restart. Now the planes are sitting on the icy airfield and waiting for the ground crews and their starting equippment.