"C2.3 TYPES OF INFORMATION THAT MAY BE COLLECTED ABOUT UNITED STATES PERSONS,
"Information that identifies a United States person may be collected by a DoD intelligence component only if it is necessary to the conduct of a function assigned the collecting component, and only if it falls within one of the following categories:
"C2.3.1. Information Obtained With Consent. Information may be collected about a United States person who consents to such collection.
"C2.3.2. Publicly Available Information. Information may be collected about a United States person if it is publicly available.
"C2.3.10. Narcotics. Information may be collected about a United States person who is reasonably believed to be engaged in international narcotics activities."
Under Secretary of Defense for Policy, "Procedures Governing the Activities of DOD Intelligence Components That Affect United States Persons," (Washington, DC: United States Department of Defense, December 1982), p. 17.
http://www.fas.org/irp/doddir…
