National Museum of Nuclear Science & History
John Attanas was born in 1920 and grew up on farm near Kingston, New York. After graduating from Georgia Tech in 1942 with a degree in chemical engineering, he worked in a chemistry lab at the Remington Arms Company.
Eugene S. Grennan served as a 2nd lieutenant in the 509th Composite Group. He was the flight engineer on the Straight Flush during the Hiroshima mission.