Crashed into the Pacific Ocean 400 miles off the coast of Acapulco Mexico while operating from the Coast Guard Cutter Rush in 1987. All 4 crew members survived, but it sank and was left on the ocean floor.

A few months later on 10 January 1987, still assigned to CGAS Port Angeles, near Seattle, the helicopter ditched 400 miles off the coast of Mexico while operating from the cutter USCGC Rush, due to engine failure. Aircraft salvaged but written off. Photo from: San Diego Air & Space Museum

The bizarre-looking XF5F, photographed by Arnold on the ground and in the air just nine days after its first flight. Photo by: Rudy Arnold / Smithsonian Institution

First flown on 1 April 1940, the XF5F Skyrocket twin-engined single-seat fighter looks like a April's Fools Day prank, and never made it into service. It did have good handling and climb speed, and can be seen as a forerunner of the F7F Tigercat. Photo by: Rudy Arnold / National Museum of the US Navy