In early August 1946 Swedish Lt. Lennart Neckman of the Defense Staff's Air Defense Division saw something that was "without a doubt .. a rocket projectile".
On August 22, 1946, the director of the Central Intelligence Group (CIG), Lt. Gen. Hoyt Vandenberg, wrote a Top Secret memo to President Truman, perhaps based in part on information from Doolittle and Sarnoff.