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** 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