Department of Defense Regulation 5240.1-R, Procedures Governing the Activities of DOD Intelligence Components that Affect U.S. Persons, § C13.2 (Dec. 1982): Explanation of Undefined Terms
C13.2.1. Experimentation in this context means any research or testing activity involving human subjects that may expose such subjects to the possibility of permanent or temporary injury (including physical or psychological damage and damage to the reputation of such persons) beyond the risks of injury to which such subjects are ordinarily exposed in their daily lives.
C13.2.2. Experimentation is conducted on behalf of a DoD intelligence component if it is conducted under contract to that component or to another DoD Component for the benefit of the intelligence component or at the request of such a component regardless of the existence of a contractual relationship.
C13.2.3. Human subjects in this context includes any person whether or not such person is a United States person.