Do DC-8s still fly to ANC
In the past I remember seeing: AN
-124, all 747s, Convairs at KBFI, DC-8s, Ilyushin IL
-62, Il-96, A340, P-3s, C-130s, C-141s, C-17s, C-5s, B52s all operating around the Seattle area & all 4 engines.
Probably a 747 my guess is DEN
would come near Whidbey. . .