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Joint Chiefs of Staff


The Chairman of the Joint Chiefs of Staff is the principal military adviser to the President, Secretary of Defense, and the National Security Council. By law, the Vice Chairman is the second ranking member of the Armed Forces and replaces the Chairman in his absence or disability.
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GPS Roles and Responsibilities

  • Validates requirements for GPS modernization through the Joint Requirements Oversight Council (JROC). Learn about GPS modernization
  • Applies GPS technology to a broad variety of military operations, including precision guided munition strike, force tracking, search and rescue, and remote piloting of unmanned aerial vehicles.

Relevant Units

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GPS Leadership

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Point of Contact

Col T.J. Eller
National Coordination Office for Space-Based Positioning, Navigation, and Timing
(202) 482-5809