[alienthrowaway]

> An ICBM is coming in at hypersonic speeds in the terminal phase, you’re not going to guide it anywhere using cell tower signals.

Hypersonic glide ICBMs have been successfully tested by China, and are under development in the US, so it's entirely possible to maneuver, and optionally guide them in the terminal, though perhaps not advisable on a jammable channel, except perhaps as an anti-radiation weapon.