NTS-3 (Navigation Technology Satellite 3) is a demonstration navigation satellite. NTS-3 will experiment with a new digital signal generator that can be reprogrammed on-orbit, enabling it to broadcast new signals, improve performance by avoiding and defeating interference, and adding signatures for detecting spoofing attacks.

NTS-3 will be the aft payload on the USSF-106 mission.

Other payloads on the USSF-106 mission have not been announced – potentially due to the classified nature of the mission.

- NASA's 6 SunRISE minisatellites will be part of the secondary payloads of this mission.