One does not have to land. Pig face has already made known his intentions, so all that is needed is one more launch that we have a reliable expectation we can take it out and have THAD placements to take a few shots at it if necessary along its path.
The Nork's aren't going to put nuclear tips on missiles they've already said are going to land in the waters "near Guam." If in fact the Nork's launch it will be to provoke an attack from the U.S. and give them an excuse to bomb the hell out of Seoul killing millions.
The only question here in my mind is this: is deliberately launching missiles over Japan and into the sea near Guam an act of war?
I say it is. China may disagree. Hell, the Useless Nations may disagree saying "Well, the U.S. was never REALLY in danger, just look where those missiles landed! No one was hurt! Nothing to see here, move along!"
To which I say bomb the sh*t out of the Nork's and the Useless Nations building in NYC while we're at it!