If there's a will, there is a way. Roads & shelters could be built, missile defenses deployed, & agreements signed. "..parking missiles on platforms that are out of sight and mind works better than a rail network or whatever." Yes, it's less than ideal, but from the locations I suggested the BMs won't need to have as long range as in Montana & therefore cheaper. OTH, the USN could save $Bs already by reducing SSBN force to 8 from 14- their current numbers are due to its desire to keep 4 (2 in Atlantic + 2 in Pacific) on stations at all times. The 6 freed boomers could then be converted to SSGNs, adding an equivalent of ~18 SSNs in firepower. The tactical nukes placed on SSNs/SSGNs wouldn't be strategic but if the goal is to save $, it would be a better solution than giving Virginia V class a strategic role.