I hope they don't go all Disney/George Lucas/Red Tails with this.
Until the late Spring 1944 one of the most helpless places you could be is in an Allied 4-engine bomber...even up to September 1944 the Luftwaffe was capable of putting together defensive sorties that destroyed 65 or more Allied heavy bombers on a single mission (Black Thursday/Schweinfurt/Regensurg).
What those guys went through, along with the RAF night raids was pretty horrific.