National Security Space Office
- Introduction page by the responsible for integrating U.S. Department of Defense and Intelligence Community space system architectures for future space programs.
- http://www.acq.osd.mil/nsso/

Army Space Command
- Provides updated news, fact sheets and photos of the US army's space activities. Includes army astronaut information.
- https://www.armyspace.army.mil/index.asp

Cheyenne Mountain Operations Center
- Includes facts, mission overview and photos of this unique site for joint US and Canadian missile warning and space operations.
- https://www.cheyennemountain.af.mil/

North American Aerospace Defense Command (NORAD)
- Contains overview of missions with facts, news, staff matters and outreach for children. A joint US and Canadian agency providing surveillance of man-made objects in space.
- http://www.norad.mil/

Space and Missile Defense Command
- Includes a variety of information on operations, organization, personnel matters and photo galleries of the US army's space command.
- http://www.smdc.army.mil/

Space and Mission Systems Center
- "Deliver unrivaled space, missile, and information capabilities and systems to the joint warfighter, and our nation". Provides an overview of the US airforce space applications.
- http://www.losangeles.af.mil/

USA National Reconnaissance Office
- Includes overview, outreach program, news and links. The organization designs, builds and operates US reconnaissance satellites for customers like the Central Intelligence Agency (CIA) and the Department of Defense (DoD).
- http://www.nro.gov/

Space Vehicles Directorate of the Airforce in USA
- Offers an overview of space military missions in USA, technology, news and events. Missions includes space-based surveillance and space capability protection.
- http://www.vs.afrl.af.mil/