C.F.R. » Title 50 » CHAPTER II—NATIONAL MARINE FISHERIES SERVICE, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE › SUBCHAPTER C—MARINE MAMMALS › PART 218—REGULATIONS GOVERNING THE TAKING AND IMPORTING OF MARINE MAMMALS › Subpart O—Taking and Importing Marine Mammals; U.S. Navy's Northwest Training and Testing (NWTT)