Two memories, A tv interview with Barnes Wallace where he said, the Delta shape is dated! No further talk or discussion has always left me wandering what he had in mind? An engineer I worked along side used to be employed at Heathrow on the Concord section, told me it was not unusual to be asked by the test pilot, "Who' was working on Concord number whatever, to come with him as he was test flying it now, and you can come with me as you worked on it", Quick dash over the Bay of Biscay and home. Always amused me to think of him telling his wife where he had been today.
BC