WILLISTON, N.D. — At the Marshall Space Flight Center in Huntsville, Alabama, Williston High School alumnus Austin Decker works as a lean-direct-injection alternate discipline lead engineer. If that title sounds as complicated as rocket science, that’s because it is. Despite the unbelievable difficulty of safely sending people out into the vacuum of space and then bringing them back, Decker said the education and upbringing he received in Willis…