The Department of Homeland Security's Science and Technology Directorate is inviting applications for supplemental funding under the DHS S&T Center of Excellence (COE) program, specifically targeting existing COE recipients. The objective of this opportunity is to support innovative research and education activities that address homeland security missions and technology gaps, with a focus on rigorous scientific and engineering methodologies. The COEs play a crucial role in generating original research that can be integrated with homeland security operations, thereby enhancing national security capabilities. Interested applicants must submit their proposals by May 23, 2025, with funding amounts ranging from $0 to $10 million. For further inquiries, contact Marsha D. Mathis at marsha.mathis@dhs.gov.