Bloody Skies: A 15th Aaf B-17 Crew: How They Lived and DiedMuch has been written about the U. S. Army Air Corps in World War II, but the contributions of each aircrew member to that effort have been largely neglected. Also, the importance of the unity of the crew has not been sufficiently emphasized. BLOODY SKIES is the story of a Fifteenth Air Force, Second Bomb Group (H), Twentieth Squadron, B 17 crew that often flew the notorious "Old Flak Holes," and how they learned to respect and trust each other.