The crew Major Albert Wibier (l.) (TFS Specialist) and Pilot Robert Wielemans (r.) posing in front of Farman F.41 Type 40 N° "23" at Ten Bogaerde airfield. At that time they were testing the TFS (Téléphone Sans Fil or Wireless Transmitter) - Wibier being the CO of the TFS Company of the Belgian Armed Forces.