"The Foofighters Files (1)- Catalogue of Unconventional Aerial Phenomena Reported by Allied pilots during WWIII (1943-1945)" by Dominique F. Weinstein, 2009

The term Foo Fighter was used by Allied aircrafts pilots during WWII to describe mysterious aerial phenomena, like UFOs, that were seen over European and Pacific areas of operations. As of November 1944 and forward, foo fighters were thought to be secret weapons employed by the Axis powers.