Barnes Wallis was an English engineer, inventor, and scientist. He played an important role during the Second World War by inventing the bouncing bomb which was used in Operation Chastise by the Royal Air Force to attack the dams of the Ruhr Valley. Barnes Wallis is also credited with inventing the earthquake bomb and his version of the geodetic airframe.
Aeronautical and mechanical engineer Harold E. Froehlich was also a World War II Navy veteran. He had designed high-altitude balloons during his stint at GE. However, he is best remembered for inventing the Alvin, a deep-diving submarine that assisted in locating the wreckage of the Titanic and a lost hydrogen bomb.