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. Comprised of four teams: Additive Manufacturing Science, Characterization Science, Electrochemistry, and Welding & Joining, we deliver leadership in manufacturing science related to nuclear materials, ferrous alloys, refractory metals, and a variety of non-metallic materials for nuclear weapons, nuclear energy, and global security missions.