SYSTEM DELTA 84 (SYD 84/MT) MEDIUM EARTH ORBIT MISSILE WARNING / MISSILE TRACKING EPOCH 3 and EPOCH 4, REQUEST FOR INFORMATION (RFI)

SPACE SYSTEMS COMMAND (SSC) System Delta 84 (SYD 84/MT) MEDIUM EARTH ORBIT MISSILE WARNING / MISSILE TRACKING EPOCH 3 and EPOCH 4 **UPDATE** 10 November 2026** The Government has updated the RFI Page Count to 50 Pages. Additionally, industry should reach out to our MEOE3IndustryEngagement@groups.af.mil for instructions for classified submittals. **UPDATE** 8 September 2026** The Government has made an update to the Response Date. The Updated Response Date is: 1 December 2026. The Inactive Policy will remain as "15 Days after Response Date." **UPDATE** 21 August 2026** The Government has made available via DoD SAFE transmissions the following documents to interested vendors (in good standing on SAM.GOV) who have contacted the Government POCs in this RFI: (CUI) MEO Epoch 3&4 Industry Day Briefing 07_22_2026 (CUI) Epoch 3&4 Market Research RFI CUI Industry Day Q&A Document 08_20_2026 (CUI) Instructions for the Release of Attachments to MEO Epoch 3&4 Market Research RFI 08_20_2026 Additionally, the Primary Point of Contact (Contracting Officer/Agreements Officer) has been updated, to Capt Kerry Kearschner, USAF. Email: kerry.kearschner@spaceforce.mil. The following companies were added to the list of entities/contractors supporting SSC/SYD 84 and its affiliated government organizations: The Tech7 Company and Galaxia If the respondent disagrees with the release of its RFI response to any of the aforementioned firms, the respondent must clearly state this restriction in the cover letter accompanying the RFI response. **END OF UPDATE** Description SSC requests industry feedback on a Resilient Missile Warning and Tracking (MWT) Medium Earth Orbit (MEO) layer Epochs 3 & 4 (E3&4) production feasibility that will support MWT Full Warfighting Capabilities (FWC). The government is seeking industry feedback to inform the MEO E3&4 acquisition strategy and technical approach. The MEO MWT architecture is being incrementally developed in capability-based deliveries called Epochs. Eac