Lighter Side of News (Oct. 27, 2017) by HallR

Question 10

Since Halloween is this Tuesday, the mini-theme for #10 & #11 this week is "Animated Halloween Television Specials". What word fills-in the blank in this Wikipedia plot synopsis about "It's the Great Pumpkin Charlie Brown" (airing again this Sunday): "Meanwhile, Snoopy, wearing his World War I flying ace costume, climbs aboard his doghouse (imagining it to be a Sopwith ______ fighter plane) to fight with the Red Baron"?