The Department of Defense (DOD) is seeking proposals for the topic of "Over-the-Horizon Radar (OTHR) Operational Fusion" as part of their SBIR 24.2 Annual solicitation. The topic is under the jurisdiction of the Missile Defense Agency. The objective of this solicitation is to develop and implement algorithms for fusing OTHR tracks with Overhead Persistent Infrared (OPIR) data to generate real-time attributable tracks of long-range airborne weapons. The technology being solicited falls under the Integrated Sensing and Cyber and Integrated Network Systems-of-Systems critical technology areas. The project will be conducted in two phases, with Phase I focusing on demonstrating technical feasibility and Phase II involving the development, demonstration, and assessment of integrated means of correlating and fusing OTHR tracks using OPIR source data and infrastructure. The project duration is not specified in the document. Interested proposers must submit their proposals by June 12, 2024. For more information and to access the solicitation, visit the DOD SBIR website.