GA-EMS completes IDR for USSF’s EO/IR EWS satellite programme 30 Apr 2021 (Last Updated April 30th, 2021 15:17) General Atomics Electromagnetic Systems (GA-EMS) has achieved a major milestone in the US Space Force (USSF) Electro-Optical Infrared (EO/IR) Weather System (EWS) satellite programme by completing the initial design review (IDR) of the programme’s space vehicle and ground segment. Share Article USSF Electro-Optical Infrared (EO/IR) Weather System (EWS) satellite programme marks critical milestone. Credit: General Atomics. General Atomics Electromagnetic Systems (GA-EMS) has achieved a major milestone in the US Space Force (USSF) Electro-Optical Infrared (EO/IR) Weather System (EWS) satellite programme by completing the initial design review (IDR) of the programme’s space vehicle and ground segment.