Concepts of high and low pressure and moving air masses and their effects on weather conditions. Direction of wind flow in high and low pressure areas. A map shows high and low pressure areas in America during different times in year.
A man at weather bureau explains process of forecasting weather and transmitting it to other stations and to the public. Weather information transmitted to ships and air mail pilots.
Highlights the importance of weather forecast to inform people against the danger of natural hazards like storms and floods. A man rows a boat through a flooded area.
Crews of American young men loading up and organizing for training in fire fighting duties, circa 1920. Unemployed workers in lines and waiting queues in 1933 during Great Depression. President Franklin D. Roosevelt announces the formation of Civilian Conservation Corps. Civilian Conservation Corps men of the forest service, at work, setting up telephone poles, stringing wire, building roads, building fire lookout towers, and helping to fight fires.
Discussion of the Tillamook Forest Fire of 1933 in Oregon. Men cutting huge fallen tree with two-man saw. A man works on a Steam Donkey, dragging cut logs. The end of a log in flames. Lumberjacks try to put out the fire. A ranger spots smoke rising from the forest. A phone call being made and organized firefighting crews including the Civilian Conservation Corps respond to fight fire. CCC men cross a log bridge and climb steep hill into the forest. Other responders seen in mule trains. Forester atop a burned out telephone pole, where wire had been destroyed. Firefighters using wireless radios. Smoke rises from the forests. Smoke rises from the hill. Suddenly, wind changes and fire explodes. Views of the actual Tillamook Forest fire storm of August 1933. Two weeks later, rain suppresses the fire. View of firefighters using shovels, axes and other tools to dig fire line by hand, next to smoking underbrush. View of man holding a "Pulaski" tool, half axe and half hoe. Men looking over the aftermath of the Tillamook burn. Lumberjacks chopping a huge standing tree with axes. Cut logs suspended from cables, being moved. Forester with backpack, hiking along trail. Firefighters suppressing small wild fires with hand tools. (Great Depression period)
World War II scenes of German Stuka dive bombers in operation. U.S. B-25 bomber in flight, and views of firestorms from Allied incendiary bombing of Axis targets. Scenes of the "Operation Firestop" project in 1954-55, in California. U.S. Forest Service and other agencies cooperate in a one-year project headquartered at Camp Pendleton, California. Aerial views of Camp Pendleton area, in Southern California. A modified Grumman TBM Avenger torpedo bomber in flight discharges water from its torpedo bays. Men installing fabric water container into the bomb bay of the TBM. The aircraft seen in low level pass, dropping water contents onto field. Cropduster pilot Floyd Nolta, seen flying his Stearman biplane over California landscape, and then taxiing in to park, after landing. On the ground, we see how he modified his airplane to release water from a hopper in its bottom. On August 13, Vance Nolta flies the Stearman on multiple sorties, dropping water on a fire in the Mendecino Forest. Nolta filling his water tank from a hose at Willow Airport, and dropping water from the air, above the fire. View at Willow Airport, of 7 Stearman and N3N airplanes modified for aerial firefighting. Views of these aircraft dropping chemically treated water from the air. TBM aircraft equipped with 400 gallon tanks drop water from the air. PBY flying boat seen in flight. A B-26 bomber passing low and dropping chemically treated water. A Navy Mars flying boat passing overhead as it drops water from a 7000 gallon tank.
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