Yu Long, a former employee of United Technologies, was charged with attempting to transport to China stolen documents containing sensitive information regarding military aerospace programs. The government alleged that, in November 2014, Long attempted to board a flight from Newark to China while in possession of documents containing sensitive proprietary research on advanced aircraft metals. Each document contained warnings indicating that they were export-controlled, proprietary, and/or subject to other restrictions. According to the government, Long’s work involved the F119 engine used in the F-22 Raptor and the F135 engine used in the F-35 Lightning II Joint Strike Fighter. In December 2016, Long pleaded guilty to one count of conspiracy to engage in the theft of trade secrets knowing that the offense would benefit a foreign government, instrumentality or agent. He also pleaded guilty to one count of unlawful export and attempted export of defense articles from the U.S. in violation of the Arms Export Control Act.