Barton B. Crespin served as a private first class in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Necessary Evil.
Barton B. Crespin
Ground Crew on Necessary EvilTinian Island
Wendover, UT
509th Composite GroupManhattan Project VeteranMilitary Veteran
![The Necessary Evil](https://ahf.nuclearmuseum.org/wp-content/uploads/2015/06/Necessary Evil.jpg)