Greg Abbott wants it in Houston.
Of course he does. Let’s put the HQ of one of the services in a place that gets slammed by hurricanes and floods on a semi-regular basis.
Vandenberg would be a good location, other than earthquakes, but Colorado Springs, the current home of Space Command, is probably best, both in terms of centrality and low risk of natural disasters (other than fire). It could even share the service academy with the Air Force.