The Department of Defense, specifically the Army, is seeking innovative solutions through the Small Business Innovation Research (SBIR) program to develop phase change materials (PCMs) for enhanced thermal regulation in Closed-Circuit Self-Contained Breathing Apparatus (CC-SCBA) systems. The objective is to create lightweight, reusable, and regenerative materials that can effectively manage the thermal load on operators, thereby improving mission duration and effectiveness while maintaining air temperatures below 35 °C for extended periods. This initiative is critical for enhancing warfighter survivability and lethality in tactical environments, addressing the challenges posed by current CC-SCBA systems. Interested parties should note that the solicitation is currently closed, with the application due date having been June 12, 2024. For further details, visit the official source link at https://www.dodsbirsttr.mil/topics-app/.