25 January 2023, Brandenburg, Schönefeld: A man wearing a Verdi vest takes a photo of a display board showing all flights as canceled during a warning strike at Berlin-Brandenburg BER Airport. The Verdi trade union has called for an all-day warning strike at Berlin-Brandenburg Airport. No passenger flights are expected to take off or land there. Photo: Christoph Soeder/dpa (Photo by Christoph Soeder/picture alliance via Getty Images)