Dieter Grau

Dieter Grau (April 24, 1913 – December 17, 2014) was a German-American rocket scientist and member of the "von Braun rocket group", at Peenemünde (1939–1945) working on the V-2 rockets in World War II. He was among the scientists who surrendered to the United States and traveled there, providing rocketry expertise via Operation Paperclip, which took them first to Fort Bliss, Texas. 
Grau died in Huntsville, Alabama, at the age of 101 on December 17, 2014.