The Space Plasma Characterization Source (SPCS) studies how a cold gas ammonia thruster and a Hall effect thruster behave in space, and how they affect the spacecraft's surroundings.
SmartMESA, also known as the Integrated Miniaturized ElectroStatic Analyzer, or iMESA, and WISPERS were respectively ranked as the 26th and 31st most important experiments for DoD satellites in 2006, by the US Space Experiments Review Board.