Le 15h17 pour Paris

The narrative gives a personal look at their experiences, but I wonder how much of their own storytelling shaped the book. Was this approach planned from the start or did it evolve during writing?

The story is incredibly uplifting, but it also made me think about the dangers these heroes faced. How do others process the intense moments of danger and heroism in the book?

The vivid descriptions make it feel so real—I'm curious about the process behind gathering the story's details. Did the authors rely mainly on personal recounts or extensive research?