Saturday, December 12, 2020: A truck with fireworks is burning on the A3. At 3:09 p.m., the emergency call center in Würzburg receives information about the accident in front of the Würzburg-West motorway triangle, in the direction of Würzburg. Three minutes later, the alarm fax is sent from the integrated control center (ILS) to the Helmstadt and Waldbüttelbrunn fire departments. At the same time, district fire chief Michael Reitzenstein and the then district fire inspector for the west area, Winfried Weidner, are alerted. But another five minutes pass before the nearest fire brigade is allowed to move out in Waldbrunn.