Chenguang Gong, a dual citizen of the United States and China, pleaded guilty on July 21 to one count of theft of trade secrets. Gong transferred more than 3,600 files from the Los Angeles-area research-and-development company he worked at briefly to personal storage devices, prosecutors said. The stolen files included blueprints for sensors designed to track and detect nuclear, ballistic and hypersonic missiles, as well as blueprints for sensors designed to enable U.S. fighter jets to detect and evade heat-seeking missiles, prosecutors said.