"My dad (since deceased) was on this mission, too. Although he never, ever spoke about the war, he did have a Distinguished Flying Cross. Is there an internet site dedicated to these men? He was a tail gunner." Perhaps, you'll find your dad here.
376th Heavy Bombardment Group
My dad was a Seabee on Guadalcanal. And, like yours, he never spoke of his experiences there. We and the country were blessed to have such fathers.
My DAD is the last WW1 American Legion veteran in Alabama. He was 107 last May... Several States have buried their last WW1 Veteran. He was too old for WW2. The ranks change about every day.