In the 1950s Avro Canada developed the VZ-9AV Avrocar. It was an attempt to create a craft that could take off and land vertically. The project was eventually taken over by the US military.

Like the Fifty Fathoms, the Air Command’s story began in the 1950s as a military tool watch. But compared to its diver sibling, very little is known about it. What is known is that in the 1950s ...