Due to federal restrictions contained in the current National Defense Authorization Act, citizens of the People's Republic of China-including the special administrative regions of Hong Kong and Macau-as well as citizens of the Islamic Republic of Iran, the Democratic People's Republic of Korea (North Korea), and the Russian Federation, who are not Lawful Permanent Residents ("green card" holders) are prohibited from accessing facilities that support the mission, functions, and operations of national security laboratories and nuclear weapons production facilities, which includes Los Alamos National Laboratory. The Pit Technologies Division Office has several openings for First Line Managers, Manufacturing Manager 3. These positions lead engineering or operations teams in various groups, including PT-2 (Plutonium Machining), PT-3 (Plutonium Assembly and Welding), PT-4 (Plutonium Foundry), PT-5 (Plutonium Product Engineering), PT-6 (Production Technical Support), PT-7 (Plutonium NDE & Inspection), and PT-8 (Plutonium Tooling).