SFL Missions to Deliver Spacecraft Buses for HawkEye 360 RF Signal Detection Expansionby Clarence OxfordLos Angeles CA (SPX) Sep 17, 2025SFL Missions Inc. has secured a contract to build spacecraft bus units for three new HawkEye 360 satellite clusters, adding nine spacecraft to the company's expanding constellation for RF signal detection and geolocation. Through its Flex Production program, SFL Missions delivers bus units and subsystems derived from its 30-kg DEFIANT platform, designed in Toronto for HawkEye 360. HawkEye 360, headquartered in Herndon, is a leader in space-based signals intelligence and the first to deploy formation-flying microsatellites for terrestrial and maritime RF detection. SFL Missions is pleased that HawkEye 360 continues to leverage our quality platforms to develop the small satellites that enable the core of its space-based RF signal detection constellation," said Dr. Robert E. Zee, Director of SFL Missions. HawkEye 360 selected SFL Missions for its expertise in attitude control and formation flying, which are essential for precise RF geolocation.