CBAS (Continuous Broadcast Augmenting SATCOM) is a geostationary satellite to provide communications relay capabilities to support senior leaders, combatant commanders, augmenting existing military satcom.

EAGLE (ESPA Augmented Geostationary Laboratory Experiment) is an experimental satellite built by Air Force Research Laboratory (AFRL) and is flown via the STP (Space Test Program).

Mycroft is an experimental satellite built by Air Force Research Laboratory (AFRL) and is flown via the STP (Space Test Program) to demonstrate satellite inspection.

Mycroft is the 4th generation experimental Space Situational Awareness (SSA) spacecraft that builds upon technology, knowledge, and lessons learned from XSS-10 (2003), XSS-11 (2005), and ANGELS (2014).It is built on an Orbital ATK ESPASat bus.

USA 286 is an unidentified experimental satellite built by Air Force Research Laboratory (AFRL) and is flown via the STP (Space Test Program).

Likely USA 286 is one of the payloads listed on the EAGLE mission - with ARMOR (AFRL-1201 Resilient Spacecraft Bus Development Experiment) being the most probable candidate.

USA 287 is an unidentified experimental satellite built by Air Force Research Laboratory (AFRL) and is flown via the STP (Space Test Program).

Likely USA 287 is one of the payloads listed on the EAGLE mission - with ARMOR (AFRL-1201 Resilient Spacecraft Bus Development Experiment) being the most probable candidate.