They could be moved around, disguised as freight trains. https://en.wikipedia.org/wiki/Railcar-launched_ICBM https://en.wikipedia.org/wiki/Railcar-launched_ICB

They could be moved around, disguised as freight trains. https://en.wikipedia.org/wiki/Railcar-launched_ICBM https://en.wikipedia.org/wiki/Railcar-launched_ICBM Choo Choo!