Harry Osborn, First Lieutenant U. S. Army Air Corps, banked his wide-winged bombing plane in an easy, swooping curve. In the distance New York's white pinnacles caught the sun above a blue-gray billowing of twilight ground-haze. A faint smile lifted the corners of his lips as he glanced overside, saw a train crawl along shining rails and come to a halt. Brown dots appeared from the passenger car behind its locomotive and clustered in ordered confusion...