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. Success in this role requires the ability to develop detailed manufacturing plans from 2D drawings or 3D models, along with the ability to work closely with machinists, inspectors, welders, engineers, manufacturing liaisons, managers, and customers to support the division's daily operations.