The Pentagon awarded $7.1 million to Martin Materials Solutions to expand domestic production of cover glass for satellite solar cells, announced July 17 under Title III of the Defense Production Act. The funding will support the expansion of a production line at the company’s facility in Twinsburg, Ohio, which manufactures thin, radiation‑resistant glass used to shield photovoltaic cells on spacecraft solar arrays. Cover glass protects cells from radiation, micrometeoroids, and damaging wavelengths while maintaining structural integrity during orbital operation. Martin Materials is one of a limited number of U.S. firms that supply or fabricate cover glass for satellite solar cells. Other domestic companies are involved at various stages of the production chain. The award aims to increase capacity and reduce reliance on a small set of domestic and foreign sources for a material deemed essential to national defense. Sandra Erwin reports that the investment reflects ongoing concerns about supply chain vulnerabilities for critical space components.