Here we are again, with this very popular thread.. 1963 was a pivot year for the original US SST competition. JFK announced it in June, just days after Juan Trippe revealed his exploratory order for Concord(e)s. NASA was working with a Boeing and Lockheed on refining (really, commercializing) some SCAT configuration. Almost everyone else was looking at the SST concept, even if someone denied this then and later. One of the hopeful was NAA, that had been excluded from the NASA contract on SCAT but had re-entered the fray (this a really poorly known episode) thanks to a work-sharing agreement with Boeing, by which they did the tasks contracted by NASA on two configurations (or, half the tasks contracted by NASA on all configurations, that seems nearer the truth). In parallel, they did work on their own concepts, derived or not from the B-70. Lttle is known on those activities (the documents are buried in the Boeing archives), BUT NAA used Le Bourget 1963 to go public. Unfortunately, what I've been able to find of their technical and PR activities in Paris amount to little more than model photos. I post them here to stimulate research.
First is a panoramic of five configuration they were studying in early 1963. Four were SCAT derived (you can recognize a SCAT 15-3 and a plain SCAT 15, both VG, and what seems a less-radical-version-than-NASA-one SCAT 4). The internally studied configuration is the one in the highest part of the photo.
Second is what is described as NAC-2000 concept (clearly related to the NAC-60 tendered a few months later in the FAA competition). Third is, above, another view of NAC-2000, and below, another view of the SCAT-15 derivative.
Fourth, is another configuration, could be a variation of the SCAT 15-3, but I'm not so sure.
Sorry for the low quality of the images, I'm working from poor originals...
Forced laminar flow concept. I wonder it need frequent cleaning of small holes or filter 
