; and (27) Dust Off crews from the Vietnam War hailed from every State in the United States and represented numerous ethnic, religious, and cultural backgrounds. 3. Congressional gold medal (a) Presentation authorized The Speaker of the House of Representatives and the President pro tempore of the Senate shall make appropriate arrangements for the presentation, on behalf of Congress, of a single gold medal of appropriate design in honor of the Dust Off crews of the Vietnam War, collectively, in recognition of their heroic military service, which saved countless lives and contributed directly to the defense of our country. (b) Design and striking For the purposes of the award referred to in subsection (a), the Secretary of the Treasury shall strike the gold medal with suitable emblems, devices, and inscriptions, to be determined by the Secretary, in consultation with the Secretary of Defense. (c) Smithsonian institution (1) In general Following the award of the gold medal in honor of the Dust Off Crews of the Vietnam War, the gold medal shall be given to the Smithsonian Institution, where it will be available for display as appropriate and available for research. (2) Sense of Congress It is the sense of Congress that the Smithsonian Institution should also make the gold medal awarded pursuant to this Act available for display elsewhere, particularly at appropriate locations associated with the Vietnam War, and that preference should be given to locations affiliated with the Smithsonian Institution. 4. Duplicate medals The Secretary may strike and sell duplicates in bronze of the gold medal struck pursuant to section 3 under such regulations as the Secretary may prescribe, at a price sufficient to cover the cost thereof, including labor, materials, dies, use of machinery, and overhead expenses, and the cost of the gold medal. 5. National medals The medal struck pursuant to this Act is a national medal for purposes of chapter 51 of title 31, United States Code.