Global Positioning System (GPS) Control-Segment Sustainment III (GCS III)

The United States Space Force Space Systems Command is seeking industry capabilities for the Global Positioning System (GPS) Control-Segment Sustainment III (GCS III) contract through this sources sought notice. The procurement covers comprehensive systems engineering, software sustainment, cybersecurity engineering, operations support, and hardware/software maintenance for the GPS Control Segment at multiple global locations including master control stations, ground antennas, and monitoring stations. Key requirements include satellite constellation command and control system modifications, software development and testing, cyber monitoring and risk management, technical order development, training execution, and program management capabilities. Industry responses must demonstrate the ability to perform mission-critical tasks at multiple international sites with immediate operational capability following the transition period. The government has established a response deadline of July 31, 2025, and is particularly encouraging participation from small businesses and small disadvantaged businesses. Interested parties must submit a 10-page Statement of Capability (SOC) demonstrating relevant experience and technical capabilities.

This opportunity does not utilize any set-aside designations and falls under NAICS code 517810 (All Other Telecommunications) with a small business size standard of $40 million. The anticipated contract structure is an Indefinite Delivery/Indefinite Quantity (IDIQ) arrangement with a five-year ordering period beginning in mid-2028. The contract will include a six-month transition period and a possible six-month extension option. The sources sought notice does not identify current incumbents or provide specific award values, focusing instead on gathering industry capabilities and qualifications. The procurement represents a significant sustainment effort for critical GPS infrastructure supporting global positioning and timing services across multiple international locations.