Interdict generally means to ban or prohibit something. It may also refer to an ecclesiastical censure by the Roman Catholic Church withdrawing certain sacraments and Christian burial from a person or all persons in a particular district. For example, Helicopter Interdiction Tactical Squadrons are units that contain Coast Guard armed helicopters and are authorized to employ airborne use of force. The unit’s primary mission is to interdict and stop drug smuggling go-fast vessels.