Stock Photo - 20 December 2021, Mecklenburg-Western Pomerania, Greifswald: Nick Ehling and Markus Freudenhagen (l-r), pilots of the DRF Luftrettung, test the night vision equipment before the night flight. The rescue helicopter ""Christoph 47"" is used when things have to move quickly within a radius of 70 kilometres. At night, the radius of action is even greater. Whether it's resuscitation on the beach of Usedom, a traffic accident on the island of Rügen or respiratory distress in Barth - first and foremost, the helicopter gets the emergency doctor to the scene of the emergency or the patient to the hospital as quickly as possible. Photo: Stefan Sauer/dpa. - Greifswald/Mecklenburg-Western Pomerania/Germany