I highly doubt the US would be willing to send boots to the ground to blow up their missiles manually - urban warfare takes a heavy toll and I doubt if the Trump administration can withstand the criticism if body bags start coming home.

You could be entirely right. Honestly I hope you are right. We lost far too many in Iraq and Afghanistan. I was probably just being cynical. I trust the decisions of the senior leaders in the military but their commander and chief tends to trust the wrong advice.

The only possible correction I might add is the Air Force probably will not drop bombs but would have to fire missiles. The openings are on the sides of mountains and require horizontal access or I suppose incredibly massive bombs. Earth shattering bombs. Something closer to tactical nukes which the US has not stockpiled in a long time AFAIK.