Nuclear Museum Logo
Nuclear Museum Logo

National Museum of Nuclear Science & History

Eugene S. Grennan

Flight Engineer on the Straight FlushHiroshima Mission

Tinian IslandWendover, UT
509th Composite GroupHiroshima MissionManhattan Project VeteranMilitary Veteran
The Straight Flush

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.

Related Profiles

A. J. Keesing

Oak Ridge, TN

A. J. Keesing worked for the Union Carbide & Carbon Corporation.

Allen P. Boston

T-Plant/200 Areas

Boston worked at the 200 West Area at Hanford during the Manhattan Project. 

Edward J. Simon

Oak Ridge, TN

Edward Simon worked for the Roane-Anderson Company.

Harold E. Randall, Jr.

Los Alamos, NM

Harold Randall served in the Army at Los Alamos during the Manhattan Project.