I knew a guy, now deceased who also flew B-26's on D-Day. He once told me that of 16 in his group which attacked a certain target, 7 were shot down by AA.
He lost an engine but managed to get back to England. He saw a lone fighter coming at him and knew he was done for with only one engine. Fortunately it was a Spitfire and it flew with him back to the English coast.