Looking at the picture, the appear to be the F4U Corsair, it was a Navy airplane that flew many missions over in the Pacific during WWII. Pappy Boyington led many missions as a Navy rebel. You've got to read up on him. He was quite fearless.
I never noticed. I have to also be honest in saying that it doesn't make me sad as much as fill me with a sense of wonder... What different times those were. Simpler in a lot of ways. Anyway, thanks for the comment!