The Otter/Twin Otter series are amoung the most versatile aircraft ever built. They have been used as fire-fighting water-bombers and as interurban air buses. Able to out-perform the helicopters of the time, U. S. military Otters have explored Alaska and Antarctica. Otters have made both war and peace, as front-line supply haulers in Vietnam and as the backbone of United Nations peacekeeping efforts in the Middle East. | Otter and Twin Otter by SEAN ROSSITER, Paperback | Indigo Chapters