Each of the seven models in this colorful book was chosen with super performance in mind. The wingspans are extra wide (ranging from 2 to 2 1/2 feet) and extra stable to allow maximum flight time. The planes are sturdy enough to be flown outdoors and several have been designed with a tow hook that enabled them to be towed into the air, kite fashion, and released at heights up to 150 feet. These free-flying gliders are capable of several minutes or...