It was a civilian in privatized housing on base. It is already established that a house on base is an authorized storage location for firearms as long as they are registered with Security Forces. The firearms were registered but the bigger picture to me is it is a home that one pays rent to a private organization as a land lord. No different then living in D.C. or another location under federal jurisdiction. D.C. v. Heller quotes the core as the second amendment being “Similarly, the requirement that any lawful firearm in the home be disassembled or bound by a trigger lock makes it impossible for citizens to use arms for the core lawful purpose of self-defense and is hence unconstitutional”, 2. “As the quotations earlier in this opinion demonstrate, the inherent right of self-defense has been central to the Second Amendment right.” and most importantly 3. “In any case, we would not stake our interpretation of the Second Amendment upon a single law, in effect in a single city, that contradicts the overwhelming weight of other evidence regarding the right to keep and bear arms for defense of the home.”
Title 18 allows Federal law to assimilate Texas Law, and we do all the time.
Past that the question at hand is does the post = a threat, short answer is (I think) no.... opinion?