World War I scenes of U.S. Army airplanes in action at the front. A picture of U.S. Army Major Henry A. (Hap) Arnold and California Forester Kurt Dubois, who, together, started the fire patrol practice by United States Army aircraft in1919. Army flyers lined up on a field. Army Curtis JN-4 (Jenny) airplanes in flight as smoke rises from the forests below. Weighted messages with ribbons attached, being dropped by pilots while in flight to inform about a forest fire. Later on after the installation of radios a pilot sends a message on a radio set in case of a forest fire. In 1920s, Crawler tractors used to skid logs out of the forest. In 1925, tractor with a blade was developed and used to build forest roads. In 1932, a Bulldozer being used to create firebreaks during a Southern California fire. A fire plow in operation.
Location is the Ellipse, south of the White House, in Washington, DC. The occasion is the dedication of a temporary Zero milestone in ceremonies at the start of the U.S. Army Motor Transport Corps'so-called "Truck Train," a convoy of military vehicles that is to travel the "Lincoln Highway" across the United States, to San Francisco, California. The ceremony begins with a flag raising, where all stand and uniformed Army officers salute. Congressman Julius Kahn, of California, salutes with his hat over his heart. The temporary marker is covered with white cloth and two wreaths, which officials remove and Secretary of War Newton D. Baker, begins his speech accepting the temporary marker. (A permanent marker needed an act of Congress for approval. So a temporary one was approved to allow the launch of the Army cross-country convoy.) The Washington Monument is visible in the background, as Mr. Baker delivers his remarks.
Picturesque views of the 1919 U.S. Army motor transport convoy making its way through the beautiful forests of the Sierra Nevada mountains in California. Tall evergreen trees and dramatic mountain views frame many pictures of the convoy. The convoy stopped at Kybury, California, for dinner.
Trucks of the 1919 U.S. Army Motor Transport convoy from Washington, DC to San Francisco, California, roll along the dirt road of the Lincoln Highway, crossing the Continental Divide, in Wyoming. Behind them, soldiers walk near a slow moving truck with sign painted on its back reading: "Coast to Coast Machine Shop, Service Park Unit 595." Another truck slowly passes the same point, where there is a downhill grade. A dwelling is at the side of the road, and others are seen in the background. The road is dry hard-packed dirt. Next, trucks of the convoy are seen driving on a road parallel to a railroad on which a steam locomotive is pushing a long train of freight cars in the same direction as the trucks. View of trucks driving past extended snake rail fencing.
View from just beside and below a mountain road in Sierra Nevada mountains, as trucks of the 1919 U.S. Army motor transport convoy make their way from Nevada into California. View from ahead, and below of the trucks. The narrow mountain road is lined with rock boulders and the mountain rises almost vertically beside it. A Holt tractor pulling a truck by a chain, along a stretch of the road. Trucks proceeding successfully on their own on other parts of the road. Several picturesque views by the camera operator.
A review of research and development in guided missiles by the United States Air Force from 1919 to 1948. General Motors power-driven bomb (GM A-1 Bug), number 9 on tail, in Muroc, California. Technicians work on the same. The bomb is raised into position for attaching to the launching automobile by means of a hoist on a truck. The missile is nick named the 'Bug'. Technicians work at the automobile being driven beneath the suspended missile. The missile is radio controlled. The automobile specifically built for the launch of the missile is powered by two 165 HP Cadillac engines attached to a single drive shaft. Attaching the 'bug' missile to the launching car. The tractor and the hoist are removed. The automobile is driven across terrain at Muroc. A testing station for testing radio control section of aircraft during test. A technician checks over the radio equipment and shows television camera and equipment used for test. The automobile start at a high speed across the launching strip. Take off of the missile from the automobile. 'Bug' missile in flight. Views from a control aircraft beside the GM A-1 Bug while the Bug is in flight.