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.
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.
American boy scouts organize fire prevention parade in Washington DC. View of the 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.
Weather Bureau forecasting operations and the activities dependent upon weather forecasting in United States. A pilot seated in the cockpit of an aircraft, aircraft takes off and in flight. Aircraft navigates air. Naval vessels underway in sea as a Navy aircraft flies over them. United States airship Shenandoah in flight, Shenandoah moored to the United States ship Patoka. United States airship Los Angeles in flight as crew members look down, airship flies over a bridge. Airships fly over Washington Monument and Capitol building in Washington DC.
Delegates of the Pan American Highway Commission present a gift after a month-long tour of the United States in 1924. Ceremony at the Pan American Union in Washington DC. Tablet is unveiled inscribed with the title 'Highway of Friendship', and presented as a gift to the Highway Education Board. The first line of the tablet reads, "Commemorative of the Official visit of the Pan American Highway Commission to the District of Columbia and the states of North Carolina, Kentucky, Illinois, Minnesota, Wisconsin, Michigan, Ohio, Pennsylvania and New Jersey June 2 to July 3, 1924. The happiness and prosperity of the people of the United States have been greatly enhanced by your definite program of Highway education...." U.S. Secretary of State Frank B. Kellogg accepts the tablet and speaks to those gathered.
United States Joint Chiefs of staff pose for formal portrait in Washington D.C., United States. Joint Chiefs of Staff seated at the table for a formal portrait. Officers seated at the table from the left; General Fred C. Weyand, United states Army, General David C. Jones. United States Air Force, General George S. Brown, United States Air force, Chairman Joint Chief of Staff Admiral James L. Holloway, United States Navy, General Robert E. Cushman, United states Marine Corps, Operations deputies stand in the background. Lieutenant General Donald H. Cowles, United States Army, Lieutenant Huyser, United States Air Force, Vice Admiral Train, United states Navy, Vice Admiral Tailey, United States Navy, Lieutenant General Beckington, United States Marine corps. United States Secretary of Defense, James R. Schlesinger, Deputy Secretary William P. Clements and Joint Chiefs of Staff at a conference table. Secretary Schlesinger smokes a pipe and speaks to General Brown. A man clicks a picture.