The perfect FREE GIFT for any lover of WW2 aviation and B-17s. Measuring 11.5" x 8", its perfect for framing, fitting in most standard certificate frames. Fill in the information free-style with a pen or edit directly in the pdf text fields. At the beginning of the war, 25 missions were considered a full tour of duty. Any man who survived the 25 was often informally deemed a Lucky Bastard. By the end of WW2, 40,000 allied airmen lost there lives, 1 in every 3.