Question: What sea did the first African-American aviator from North Omaha, Nebraska  member of a group of African-American military pilots who formed the 332nd Fighter Group and the 477th Bombardment Group of the United States Army Air Forces, go missing over?
Sentence (from "Hiram Mann"): Mann flew forty-eight missions over Europe as a member of the 332nd Fighter Group during the war.
Relevant evidence: No