Active
Historical

a

Airborne Tactical Observation System (ATOS)

d

Defense Support Program (DSP)

g

Geosynchronous Space Situational Awareness Program

h

Helios/Optical Space Component (CSO)

j

Joint Tactical Ground Station (JTAGS)

s

SARah
Space Rapid Capabilities
Space-Based Infrared System (SBIRS)

u

U.S. Department of Defense Weather Satellites