The Department of Defense, through the U.S. Army Contracting Command at Picatinny Arsenal, is announcing a Special Notice for the Advanced Dynamic Spectrum Sharing Demonstration (ADSSD) project. This initiative aims to develop and mature spectrum access technologies that enhance the ability to share and coexist within the 3100-3450 MHz band, addressing the challenges identified in the Emerging Mid-Band Radar Spectrum Sharing Feasibility Assessment Report. The project is crucial for ensuring effective spectrum management and supporting national defense while fostering economic growth. Interested parties must be members of the National Spectrum Consortium (NSC) to submit proposals, and inquiries can be directed to Ms. Samantha Fenske at samantha.r.fenske.civ@army.mil. The NSC provides an open membership opportunity for organizations looking to participate in this innovative research and development effort.