"And what is wrong with my post Syd?
Nothing. My reply was directed at anony mous, not you.
Although if I was being really pedantic, i'd mention that I don't think the B-17 was ever used against Japan itself. Didn't have the range. It was used in the Pacific Theater. The Doolittle raid on Tokyo used B-25's from aircraft carriers but was mostly symbolic. The serious bombing of the Japanese home islands didn't get underway until 1944 when the B-29 became available.