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Now I've spent like 20 minutes trying to figure out what that flying boat (5)is called... I could have driven to the museum and back by now. I believe it is a Curtiss, but not entirely sure.
5 is not a flying boat. Here's a hint, it was the first US-designed bomber to be procured in quantity, and Gen. William (Billy) Mitchell used it in July 1921 to sink three ships in tests off the Virginia Capes.