Ultra-rare WWII bombers take to the skies together on Sunday at the 2022 Spirit of St. Louis Airshow in Chesterfield, Missouri. Enjoy low flybys from the Boeing B-29 Superfortress "Doc" (one of two flying), Boeing B-17 Flying Fortress "Yankee Lady" (one of about nine flying), and the world's only flying P4BY Privateer, developed from the B-24 Liberator.