The DoD, Intelligence Community, and US government as a whole is subject to the same rules as everyone else, and would get into huge trouble from the FCC if it was found out that they did that.
On an side note, like other federal laws, the DoD is subject to endangered species laws, and actually take a lot of care to make sure they do not endanger them, which is made fun of here:
https://terminallance.com/2017/01/17/terminal-lance-453-ceas...