In both 5G coexistence and support for our allies, the Pentagon should focus more on the immediate goal and less on tactics. Despite its penchant for debate, the Pentagon has little relevant experience in either field.
Many government systems can be replaced by modern upgrades with zero incremental spectrum footprint above the commercial and private systems on which the highly productive civilian sector depends. Look at FirstNet.
The only way through our 1,200 year drought is get better at managing and using water than we have been. While RF spectrum isn’t in a similar crisis yet, it’s wise to prepare for an eventuality where demand far outstrips supply. Spectrum, like water, is a finite resource at each point in time even if both are reusable.