LOS ANGELES – A judge on Monday sentenced a 59-year-old San Jose man to nearly four years in federal prison for stealing thousands of files containing sensitive missile technologies and trade secrets, according to the U.S. Attorney’s Office. 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