The Department of Defense, specifically the Department of the Navy, is seeking sources for the sustainment support of the Digital Receivers (DDRx) for the Relocatable Over-the-Horizon Radar (ROTHR) System located in Texas. The procurement aims to provide essential maintenance, technical support, software support, and risk management framework services for the DDRx System, which plays a critical role in detecting and monitoring drug smuggling activities and supporting counterdrug operations. The ROTHR System is vital for tactical forces, offering advanced surveillance capabilities compared to traditional systems, and the selected contractor must have the ability to navigate proprietary technology constraints due to existing Memorandums of Understanding with the Australian government. Interested vendors are required to submit their capability information via email to Lauren Lauver at lauren.a.lauver.civ@us.navy.mil by 10:00 AM local time on January 13, 2025, to be considered for this opportunity.