SANTA ANA, CA—A former Rockwell and Boeing engineer from Orange County was remanded into custody this morning after a federal judge convicted him of charges of economic espionage and acting as an agent of the People’s Republic of China, for whom he stole restricted technology and Boeing trade secrets, including information related to the Space Shuttle program and Delta IV rocket. Dongfan “Greg” Chung, 73, of Orange, Calif., who was employed by Rockwell International from 1973 until its defense and space unit was acquired by Boeing in 1996, was found guilty by United States District Judge Cormac J. Carney, who...