United States Army Air Force footage of a helicopter designed by Emile Berliner and Henry Berliner being tested in Washington D.C.,United States. This was one of the final Berliner models built, if not the final, constructed after the triplane model 5 variant that had been demonstrated in February of 1924. This variant had a biplane configuration and was lighter to improve the thrust to weight ratio. The lower wing generated lift from the rotor downwash due to a high angle of incidence and large camber. The helicopter repeatedly lifts off, hovers, does some forward movement, and then touches the ground.
Monuments in Washington DC, United States. Several ducks swimming in the Lincoln Memorial reflecting pool (2 Lincoln Memorial Cir NW, Washington, DC 20024, United States) with the Washington Monument behind, and Capitol visible in distance. A street lighted in the night. View of the Potomac River, the Lincoln Memorial, the Washington Monument, and the U.S. Capitol, in single view, early morning. A street in downtown Washington DC. Cars moving on a road and buildings on either side of the road. The U.S. Capitol building (First St SE, Washington, DC 20004, United States) seen in the background. The Washington Monument (2 15th St NW, Washington, DC 20024, United States) in view. Equestrian statue at George Washington, at Washington Circle in Washington, D.C. The U.S. Capitol viewed at dawn, along an empty Pennsylvania Avenue. The Washington Monument, seen from space between buildings. Equestrian statue of Civil War hero, Major General John A. Logan (Washington, DC 20005, United States), at Logan Circle, Rhode Island Avenue and 13th St. NW. The U.S. Capitol dome. View from Memorial Bridge, of Lincoln Memorial and Washington monument (in distance).
View of the Old Executive Office Building in Washington DC. Library of Congress building. Trolley tracks in the street. Court of Neptune sculptures and fountains at the Library of Congress (101 Independence Ave SE, Washington, DC 20540, USA).
Robbers force a teller into a sedan before driving away from The New Hampshire Bank building at 22-26 Market Square, Portsmouth, New Hampshire. Man reads a newspaper (The Portsmouth Herald) headline reads "Teller Kidnaped in Bank Holdup." FBI agents question locals at gas station near Portsmouth, New Hampshire. View of a farm house. Police man helping in ground search gives FBI agents a prize ticket found. Close up of prize ticket. FBI Agent picks up a piece of cardboard from the ground containing tire print. FBI agents extracts a piece of cloth from barbed wire. FBI forensic investigator examines the imprints of tire marking from cardboard. View of textile mill. FBI forensic investigators analyzing cloth from Massachusetts and North Carolina textile mills. FBI forensic investigator examines piece of fabric sent as evidence. A fiber is cut from piece of fabric and added to vial of chemicals. Line of test tubes containing liquid. Signage of Kimball’s, a tie store in Boston (31 Market St, Boston, MA 02135, USA). Signage of various menswear stores in Boston selling neckties. FBI agents speak with shop clerk of tie store in Boston. Shop clerk shows a necktie to FBI agents. FBI agents show shop clerk mugshots to identify a suspect. FBI agents inside car watching building. FBI agents observe a street. FBI agent answers a telephone inside a car. Black car trails behind a convertible on highway and over a bridge. An FBI agent confronts a suspect paying at a toll booth. Black car chases convertible as FBI agent clings to passenger door as the driver attempts to dislodge FBI agent from his car. POV through windshield exiting towards Portsmouth. Convertible car swerves past a truck. Car crash as convertible hits a truck of hay. FBI agent gets up and arrests the driver. Crashed truck in flames. View of the U.S. Department of Justice (950 Pennsylvania Avenue NW, Washington, DC 20530, United States). J. Edgar Hoover, Director of the Federal Bureau of Investigation, speaks from his desk. View of an American school. American flag waving. People sitting on stone stairs outside the Washington National Cathedral in Washington DC. View of the Washington National Cathedral bell tower in Washington DC (3101 Wisconsin Ave NW, Washington, DC 20016, United States). View of a church’s bell towers. View of the United States Capitol in Washington DC. Statue from the United States Capitol stairs. “Eternal Vigilance the price of liberty” inscription below statue. “The End”.
Practice maneuvers of United States Army Air Service 1st Provisional Air Brigade commanded by Brigadier General James Fechet in the United States. The brigade from Langley Field, flying over Alexandria, prepares a mock attack targeted at the United States capital city of Washington DC. U.S. Army Air Service Airco DH4 aircraft in flight. The mock attackers reach the Lincoln Memorial in spite of the heavy rain. Rows of Navy buildings near the memorial. The DH4 aircraft above the area. The attack group in formations over Washington DC. Views of the Potomac River Bridges including the Aqueduct Bridge near newly built Key Bridge. The pursuit group attacks the enemy fleet from above and below at the same time.
Boy Scouts of America organize a fire prevention parade in Washington DC. View of the U.S. Capitol building. Boy scouts parade on street of Washington DC. They carry United States flag and banners. Banners read, 'I Was Careless With My Camp Fire', 'Don't Take Any Chance With Fire', 'Our Forests Give Health Prosperity Recreation, Don't Burn Them', 'Our Forest Protect Game Prevent Floods Equalize Climate Protect Them'. Navy band leads the marchers. United States President John Calvin Coolidge Jr reviews the parade. View of Washington monument. Secretary of Agriculture Henry C Wallace and National leader of American Boy Scouts address people.
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