. . . "Aviation in Washington, D.C."@en . . . . "2"^^ . . . . "0"^^ . . . . . . . . . . "1861-06-17"^^ . . . . . . . . . . . . . . . . . . . . . . . . . . . "1123139792"^^ . . . . . . . "Washington, D.C."@en . . . . "Marine One taking off from the White House lawn"@en . . . . . . . . "The United States capital, Washington, D.C., has been the site of several events in the nation's history of aviation, beginning from the time of the American Civil War, often for the purpose of promoting the adoption of new aeronautical technologies by the government. It has also been home to several aircraft manufacturers and aviation organizations (both government and civilian), and many aerospace contractors have maintained a presence there as well."@en . . . "31538157"^^ . . . . . . . . . . "0"^^ . "11398"^^ . . . . . "0"^^ . . . . . . "0"^^ . "The United States capital, Washington, D.C., has been the site of several events in the nation's history of aviation, beginning from the time of the American Civil War, often for the purpose of promoting the adoption of new aeronautical technologies by the government. It has also been home to several aircraft manufacturers and aviation organizations (both government and civilian), and many aerospace contractors have maintained a presence there as well."@en . . . . . . . . . . . . . . . . . . . . . .