This part establishes uniform Department of Defense policies, assigns responsibilities, and furnishes general guidance for utilizing DoD military and civilian personnel, facilities, equipment or supplies:
(a) In support of civil authorities during civil disturbances within the 50 States, District of Columbia, Commonwealth of Puerto Rico, U.S. possessions and territories, or any political subdivision thereof.
(b) In other related instances where military resources may be used to protect life or Federal property or to prevent disruption of Federal functions.