This opportunity involves developing sensors and systems to enhance national defense capabilities, including joint lethality and multi-domain operations. The work will focus on the design, modeling, simulation, analysis, experimentation, testing, and demonstration of multi-spectrum threat warning and countermeasures technologies. This Broad Agency Announcement (BAA) will remain open for proposal submissions through July 13, 2027. The required supplies, parts, and designs are for aeronautical experimental and test purposes to advance Air Force electronic warfare capabilities. No specific budget or location for performance is detailed in this description.