Presented in a compact form, the Osprey Combat Aircraft Series is a stimulating source of visual reference and detailed text on the world's leading warplanes. 8 packed with spectacular full-colour illustrations), over 30 black and white photos, and comprehensive data tables. Contents: Background. Unseen By Eye. Unseen By Radar. No Sound, Not Heat. The Lockhead Concept. The Northrop Concept. The 21st Century.