" flying fortress ", 1969, activities, air, all-metal, am-42, american, angl.north american, art, attack, average, avro lancaster, b -17, b-25, b-25 mitchell, boeing b-17, bomber, book, camaro, chevrolet, classic, clouds, construction, cool, diamond da42, dry ., engine, engines, english, experienced, fighter, fighters, flying fortress, ford, four-engine, four-engine bombers, front, general purpose, green, heavy, landed, mig- 15, mitchell, north, picture, piston, plane, quadruple, quintuple, radius, runway, single-engined, sky, soviet, spitfire mk.7, su- 6, su35, support, truck, twin star, twin-engine, ww2, yak- 7