HUNTSVILLE, AL (WAFF)- It was the mid-1940s, post WWII, when the original German rocket team arrived on U.S. soil to strengthen our missile defense program and eventually start America's space program. They numbered more than 100 back then. Today, there are only three. Dieter Grau is the oldest. He retired from NASA 40 years ago, but he is still working every day, carrying on the legacy. "I...