Scovato su wikypedia, un caso da approfondire.
en.wikipedia.org/wiki/UFO_sightings_in_the_United_Kingd...
8 September 1970: William Schaffner intercepted an unknown object over the North Sea. His BAC Lightning was later retrieved from the sea.
en.wikipedia.org/wiki/William_Schaffner
A naso, ricorda un po' il caso Mantell.
Per quanto sia tutto da investigare.