Interesting context to be gleaned with the classification citations. Use this as your guide:
Sec. 1.4. Classification Categories.
Information shall not be considered for classification unless it concerns:
(a) military plans, weapons systems, or operations;
(b) foreign government information;
(c) intelligence activities (including special activities), intelligence sources or methods, or cryptology;
(d) foreign relations or foreign activities of the United States, including confidential sources;
(e) scientific, technological, or economic matters relating to the national security, which includes defense against transnational terrorism;
(f) United States Government programs for safeguarding nuclear materials or facilities;
(g) vulnerabilities or capabilities of systems, installations, infrastructures, projects, plans, or protection services relating to the national security, which includes defense against transnational terrorism; or
(h) weapons of mass destruction.