Morgans writes:

As far as that goes, the FAA has no control over the certification or
inspection of military aircraft, in any way. They just have to put up with
the fact that the military does what they want with the aircraft they own.

The FAA allows the military to use the national airspace and waives its
regulations at its discretion ... not the other way around. Control over
aviation in the United States is civilian, not military. Restricted
airspaces, for example, are set aside by the FAA for use by the military; the
military does not give airspace to the FAA, because the military doesn't own
any airspace. Likewise, the FAA has granted a waiver for airspeeds above 250
KIAS under 10,000 feet to the military under certain circumstances, and allows
MARSA under other defined circumstances.

The United States is governed by civilian law, not martial law. The military
cannot simply do whatever it wants.