The Department of Defense, specifically the United States Air Force, is seeking proposals for the development of a low-cost proximity sensor designed for counter-unmanned aerial systems (C-UAS) munitions, particularly compatible with the Advanced Precision Kill Weapon System (APKWS). The objective is to create a sensor that effectively detects and engages both slow and fast UAS targets, as well as cruise missiles, utilizing various sensing modes including RF, passive IR, and semi-active laser IR solutions. This initiative is critical for enhancing battlefield capabilities against evolving aerial threats. The solicitation is set to open on May 28, 2025, with proposals due by June 25, 2025, and interested parties can find more information at the official DOD SBIR website.