I'm not sure if this is the right place, but does anyone have any resources/documents on the DARPA Air Dominance Initiative? I've been reading some of this forum, and I've seen NGAD being referred to as a family of systems, supposedly consisting of PCA, P-AEA, P-ISR, and P-LRS. I can't find anything about these proposals/documents. It would be interesting to compare both the USAF's philosophy on 6th gen to where they are now to see how they measure up to the latest offerings from CAC and SAC.