Nearly all flat earthers agree the earth is not a globe.
From 1956 to 1963 Kaysing also served as head of technical publications for Rocketdyne, where Saturn V rocket engines were designed and built.
The claim that he "worked with NASA" is vague and unclear, at best.
Kaysing was head of technical publications for Rocketdyne from 1956 to 1963. Rocketdyne built the engines which NASA used. Is there any evidence he personally had any direct contact with NASA? Or did he merely document the interactions of others?
If we are not speculating then we must assume