DESC: Eight Allied bombers are examines in this ongoing series on famous planes. Profiled are the Boeing B-17 Fortress, the Consolidated Vultee B-24 Liberator, the North American B-25 Mitchell, the Martin B-26 Marauder, the Boeing B-29 Superfortress, the Avro 686 Lancaster, the Vickers-Armstrong Wellington, and the Bristol Blenheim.