Publisher's Synopsis
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 about the other oblong that completed the train's complement.What appeared from his altitude to be a rather large pocket-handkerchief slid from the car and spread out on the grass. A metal tube glittered in the sun, came into motion, swivelling to the east. It looked like a cap-pistol, but Osborn knew it to be an eighteen-inch railroad gun...
