Table 2. U.S departments on STM mission followed by SPD-3

	DOD	NASA	DOT	DOC	DOS	DNI	FCC
SSA·STM R&D	■	■	■	■	■		■
Mitigation of orbital debris	●	■	■	●	●	●
Commercial use in SSA·STM	●	●	●	■
Offering SSA data and STM service	■	●	●	■	●	●
SSA data sharing and improving its interoperability				■
Promote STM standards and best practices	■		■	■
Reduce unintentional RF interference			■	■			◎
STM and Space object registration					■		◎
Develop regulations for future orbital operations	■	●	■	■	●	●

■, supervising agency; ●, cooperative agency; ◎, advisory agency.
STM, space traffic management; SPD, space policy directive; DOD, United States Department of Defense; NASA, National Aeronautics and Space Administration; DOT, Department of Transportation; DOC, Department of Commerce; DNI, Director of National Intelligence); FCC, Federal Communications Commission; SSA, space situational awareness.