In 1944, the Japanese Navy began to consider using human-guided missiles to crash themselves into Allied warships. To the Allies, these units became known as Kamikaze, or suicide squads. The Japanese used the word Tokko, or Special Attack. Tokko pilots flew almost every type of Japanese military airplane, but initial operations showed the need for an aircraft designed and built specifically for the purpose. The Japanese navy created the Ohka 22 when they modified the Ohka 11 design and added a crude jet engine to extend the piloted bomb’s glide distance. Highlighted in this image is the exhaust valve of the Kugisho MXY7 Ohka (Cherry Blossom) 22.