I think this is their first full satellite contract for the US side of the company? They make a lot of parts (star trackers, sun sensors, solar arrays, cameras…) so there’s a chance for some vertical integration. Neat.

SabreSat, Redwire’s VLEO satellite for government intelligence, surveillance and reconnaissance missions, will house “air-breathing” electric propulsion systems being developed through DARPA’s Otter program.

DARPA’s Otter program funds the development and demonstration of “air-breathing” electric propulsion technologies to enable extended satellite operations at altitudes between 90 and 250 kilometers.

This sounds pretty cool!