The head of the FBI counterintelligence unit in southern Ohio testified in the espionage trial of Xu Yanjun, a Chinese agent accused of recruiting spies to steal tech from U.S. aviation companies, reported media WCPO. FBI supervisory special agent Bradley Hull told a U.S. District Court in Cincinnati on Monday that Chinese agents had downloaded 200 family photos of an engineer at General Electric (GE) as part of their bid to coerce him to become a spy. “I think it shows they took the time to learn about their target,” said Hull, who testified for three days, according to WCPO. “The presence of over 200 images brought to a meeting in a foreign country could be used as a manner of coercion … he still has family in China.” The federal espionage trial of Xu, who is charged with recruiting spies to steal technology from U.S. aviation and aerospace firms, began on …