New York, 1st U.S. ed., 1990. 223 pp., frontis, profusely illustrated with cold. photo-ills. + cold. + b&w ills. + double-folding cold. photo & other plates; 2 large card ills. tipped-in. D.j., 30 x 23cm. FINE. This impressive book closely examines eighteen of the most important, capable and numerous 'choppers' in service today, highlighting their strengths with copious colour and black & white photographs, line drawings, squadron markings and featuring each aircraft in a stunning four-page fold-out spread. From the venerable Westland Wessex, in service since the 1950's, to the terrifying armour-plated Mi-24 'Hind' gunship, this book records performance data, cutaway diagrams and, where applicable, wartime profiles.