Liquid hydrogen engine for S-IVB and S-II stages

Rocketdyne's J-2 was America's largest production liquid hydrogen fueled rocket engine before the Space Shuttle main engines (SSME), and is being revived in support of NASA's return to the Moon.

Intelligence Branch, U.S. Army

Assistant Chief of Staff for Intelligence

Intelligence Directorate

Spouse or child of exchange visitor (J-1); may work only for petitioning employer)

The dependent spouse and unmarried minor children of a J-1 exchange visitor have this immigration classification. A J-2 dependent may apply for work permission with the DHS. It is expected in the near future that J-2s will be prohibited from full-time study at the post-secondary level.

Dependent of a J-1. May Also Be Known As: J2, J