This book is the first detailed volume to cover the famous Norden Bombsight (NBS) which was one of the most secret weapons used before and d

每件藏品都有各自的工作進度表，每架飛機的翻修經費高達數百美元，且須耗時數年才能完成。他說，他的目標是要讓這些飛機重生。