Joint Tactical Ground System

The Joint Tactical Ground System (JTAGS) program, as outlined in Program Element (PE) 0208053A, is a critical component of the Army's Research, Development, Test & Evaluation (RDT&E) portfolio, specifically under Operational Systems Development. JTAGS serves as an in-theater missile warning system, providing near real-time data and alerts on ballistic missile launches and other tactical events to support Air and Missile Defense (AMD) operations. The system disseminates information across existing communication networks, enabling rapid response and improved situational awareness for Combatant Commanders in their respective Areas of Responsibility (AOR).

The primary objective of JTAGS is to enhance the performance of Integrated Air and Missile Defense Fire Control Systems and Composite Army Air and Missile Defense Brigades. JTAGS is the only Department of Defense (DoD) in-theater system that provides space-based missile warning, with four units deployed outside the continental United States (OCONUS) in the Pacific Command (PACOM), Central Command (CENTCOM), and European Command (EUCOM) theaters. A fifth unit, located in the continental United States (CONUS), serves as an institutional trainer but remains available for deployment if needed.

JTAGS is also designated as the in-theater element of the United States Strategic Command's Theater Event System (TES), supporting all pillars of Theater Missile Defense and ensuring the shortest sensor-to-shooter connectivity.

The JTAGS Pre-Planned Product Improvement (P3I) program, established as a separate Acquisition Category (ACAT) III modification effort, focuses on upgrading JTAGS to a Block II configuration. This upgrade is designed to ensure compatibility with the next generation of Space Based Infrared System (SBIRS) satellites and to improve tactical warning parameters and timeliness. The Block II P3I program is based on requirements outlined in the 2009 JTAGS Operational Requirements Document (ORD), as well as additional Joint Requirements Oversight Council Memorandum (JROC-M) requirements and the formal JTAGS Block II Capability Development Document (CDD).

The Block II P3I program was executed in two phases, with Phase 1 completed and Phase 2 culminating in FY2022. This second phase addressed the ORD requirements, followed by a successful Follow-on Test and Evaluation (FOTE) in FY2022 and planned Materiel Release activities in FY2023. The Block II CDD further incorporates evolving user-driven needs, such as emerging threats and new interface requirements that were not anticipated during the initial ORD validation.

These efforts ensure that JTAGS remains responsive to the changing threat environment and advances in sensor technology. For FY2024, the program's focus was on the continued development and integration of cyber hardening measures, defense against emerging threats, and meeting CDD threshold requirements. Congressional directives, including JROC Memos and the Ike Skelton National Defense Authorization Act for FY2011, mandate the rapid fielding of these capabilities.

The program leverages Non-Developmental Items (NDI), Commercial Off-the-Shelf (COTS) components, and Government Furnished Equipment (GFE) to maximize efficiency and cost-effectiveness. After design and integration, JTAGS undergoes rigorous developmental and validation/verification testing to ensure operational effectiveness and suitability.

The acquisition strategy for JTAGS Block II P3I involved a full and open competition for the contract, though only the incumbent contractor submitted a proposal, resulting in a sole-source award. The contract includes Cost Plus Incentive Fee options for development, Firm Fixed Price for production, and Cost Plus Fixed Fee for sustainment. As threats continue to evolve and new satellite sensors become available, ongoing efforts under the Block II CDD are being performed through a sole-source follow-on contract awarded in May 2022.

The program transitioned to the US Space Force in FY2024, marking the final year of Army funding for JTAGS. There is no funding requested for this program element in FY2026, as the system has transitioned to the US Space Force for continued sustainment and future development.