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 "847th Bombardment Squadron"): After reforming as a heavy bombardment squadron, it engaged in combat in the European Theater of Operations until returning to the United States in late 1944.
Relevant evidence: No