Found something interesting on Hahneman..
Remember Senator Nedzi asked E Howard Hunt about Hahneman re CIA operations in Guatemala.
Media reported that Hahneman told a neighbour that he spent time in Guatemala. I found a document that names F W Hahneman as a member of the IGY in Guatemala, specifically the "World Days and Communications" section. The "International Geophysical Year" was a program to use military infrastructure to advance science in co-operation with the Soviets. In reality, that was cover for the "Space Race" the program was dreamed up by the CIA's Richard Bissell to extract info from the Soviets and launch spy satellites and the U2 plane.. Richard Bissell was the CIA guy who overthrew Guatemala's Arbenz. The CIA operation was run from Honduras and included Swan Island.
The takeaway..
Hahneman was more than a low level tech if he was a member of the IGY.
Guatemala was controlled by the CIA at the time Hahneman was in IGY Guatemala.
The IGY was public cover for CIA operations.
Speculation,, Hahneman was involved in the CIA takeover of Guatemala. The information about it became public after Hahneman was sentenced.