Ukraine gives U.S. 200 targets for Tomahawk missiles in Russia:
U.S. President Donald Trump should already know which targets in Russia could be struck by Tomahawk missiles, a military analyst said. Ukraine handed over a list of potential targets a year ago, in the fall of 2024, shortly before the U.S. presidential election. The list includes Russian...
uawire.org
The USA will have to give the missiles their mid-course updates and terminal updates.
Note pre launch requires huge data bases of the entire world’s Terran, constantly updated to be loaded as required into memory (actual pictures).
AFAIK this is from high altitude to 50’ and includes towers and transmission lines and electric wires.

IMHO the USA becomes a combatant the second t
he United States of America the Ukraine launches one.