“Where does the extra 3Billion, 643 Million, 100 Thousand DOLLARS go?”
Avionics, secure electronics, radios, counter measures, jammers, fancy interior fittings, robust redundant satcoms. And an ARMY of engineers to design and integrate all those systems into a functional whole. AF 1 is nearly complex as the space shuttle.
The USS OHIO SSBN 726 (lead Trident Submarine) cost $2Billion, new Trident submarines (replacements) are estimated to cost $4Billion. They are rather complex also.
Regards,
HLB