https://www.airandspaceforces.com/doomsday-plane-ex-korean-air-passenger-jets/
https://www.defenseone.com/business/2017/08/russian-air-force-one-boeing-trump-747/139872/
https://ig.space/commslink/overview-of-the-boeing-saoc-program-and-how-its-changing
https://en.wikipedia.org/wiki/TACAMO#History
https://www.usamm.com/blogs/news/submarine-communication
https://www.militaryaerospace.com/communications/article/14303877/raytheon-technologies-corp-communications-ballistic-missile-submarines-vlf
https://www.airandspaceforces.com/air-force-13-billion-contract-doomsday-plane-saoc/