Field investigation memoirs by retired aeronautics technician Georges Metz, documenting decades of French UFO cases including the L'Isle-Adam triangle (1990), the Haravilliers RR4 encounter (1998), the Taverny humanoid sighting (2001), and the extended Robert L. 'Roro' contact case in Aveyron (1966-69). Includes the Gaston Oble abduction claim from 1928.