Good summary of the state of play between these companies:
https://www.intelligenceonline.com/international-dealmaking/2020/11/24/hawkeye-360-kleos-unseenlabs-vie-for-sigint-dominance%2C109623371-gra?utm_source=INT&utm_medium=email&utm_campaign=PROS_EDIT_ART&did=109624065&eid=609405