A former pilot in the French Navy, Fr d ric Zumbiehl has since turned to writing. He wrote the scripts of several military adventure series, always insisting on hyper-realism, such as Team Rafale or Unit F lin. He was picked to replace Francis Berg se at the helm of Buck Danny. Francis Winis, himself a civilian pilot, holds degrees in architecture and space architecture. He helped design International Space Station modules, and has worked for the European Space Agency, A rospatiale and Airbus - all the while studying BD.