 Complete the following phrase:  Chang wrote three books documenting the experiences of Chinese and Chinese Americans in history. Her first, Thread of the Silkworm Basic Books, 1995 tells the life story of the Chinese professor, Hsue-Shen Tsien or Qian Xuesen during the Red Scare in the 1950s. Although Tsien was one of the founders of NASAs Jet Propulsion Laboratory JPL, and for many years helped the military of the United States debrief scientists from Nazi Germany, he was suddenly accused of being a spy and a member of the Communist Party USA, and was placed under house arrest from 1950 to 1955. Tsien left for the Peoples Republic of China in September 1955. Upon his return to China, Tsien developed the Dongfeng missile program, and later the Silkworm missile, which was used by the Iraqi military during its 