'Artnoon LM, Reg and Ken,
I hope the rest of your trip went well amd welcome back David
Off home soon and no time to play so far today. I was wondering if the other part to the US Navy question was the USAF. They did have the JPATS competition in the nineties. One wanted side-by-side, the other wanted Tandem and in the very end they settled on a tandem turboprop, but there were lots of runners and fallers along the way and spin-off programs followed in its wake!