A 2 seat fighter based on the NA-16 advanced trainer. Australia purchased a pair (serialled A20-1 & 2) and after evaluation further tweaked the design resulting in the more well know Wirraway (serials A20-3 onward)
Douglas B-18 Bolo, 1st Bomber Group l, Força Aérea Brasileira. 1942-55.
2 aircraft were delivered for training but soon began operations against the Uboats in local waters. A third was delivered directly to the Air Forces technical school, and a fourth crashed on the ferry flight.
Test firings were deemed generally successful although with high vibration levels. The results were fed in to the XB/B-25G with an M4 cannon, and ultimately the B-25H with lightweight T13E1.
Would be sort of easy to implement as models could be reused there are also refueling loadouts developed for older airframes. Though I still want the big tankers for nuke mode they would also be a valuable target to take down.
It involves the Honeymoon era the Tibetan Platau bases and civil version of the black hawk (S-70C-2)
They even got the civil L-100 for bringing helicopters up to the Tibetan Platau. Also I think the L-100 is still around now moving high end fish products and other stuff.