Men at work during the Woodward Avenue project in the United States. Cars move on a road. A train moves on the tracks in the background. Men at work on the railroad tracks. They move tracks beside an overpass. Cranes being used for picking dirt. Men drill holes in a concrete wall. The cracked concrete. A crane picks up concrete in the background.
The members of the Speed Recovery Campaign being introduced in the United States. The members of the Speed Recovery Campaign stand in a group. A man introduces each member of the group. President of Detroit Board of Commerce James Macaboy speaks about the objectives of the campaign.
A World War II training film depicts the use of barrage balloon to damage enemy airplanes flying at low altitude during a war in the United States. Animation shows the barrage balloons attached with wired cables in the protected area. A barrage balloon in sky. Enemy airplane in flight against the wind hits the balloon. The cable breaks and airplane can get damage. An airplane in flight in the wind direction. The airplane hits the cable and no damage is caused. The wire falls at the base. The barrage balloon flies away. Animation shows links attached to the cable in a barrage balloon. The enemy aircraft approaches the balloon. The aircraft cuts the link. The cable wire with attached parachute comes on the wing. The parachute opens and the wire cuts the wing of the airplane. The balloons deflates comes down.
A World War II training film depicts the use of barrage balloon to damage enemy airplanes flying at low altitude during a war in the United States. Animation shows the influence of weather on the barrage balloon. A balloon floats in air due to high wind. The cable breaks. The balloon flies and drags cable on the ground. Sparkling on electric wires as cable hits the wires. The cable accidentally breaks. The dive in the balloon explodes cuts the cable. The parachute opens. The balloon deflates floats downwards. Animation shows links attached in the wire cable and their function.
A training film depicts proper installation of barrage balloon in the United States. Two barrage balloons in sky. A lower link of a parachute attached on a cable. The upper link of the parachute attracted to the junction assembly. A building in the background. Troops carry a box. A soldier demonstrates the installation of barrage balloon. The soldier disconnects cable terminal assembly from a bell crank by removing the pin. He unscrews the channel pin. The soldier holds the link in his hand. He attaches the male end to the cable terminal assembly. Screws the cable pin in to correct position. He locks the terminal pin. He attaches the female end to the bell crank and tighten all the screws. (World War II period).
A railroad industrial plant in the United States. The railroad car wheels. The workers inside an industrial plant. A railroad car goes back and comes forward.
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