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The Tidal Basin and Washington Monument are visible from the cockpit of Marine One during President Barack Obama's flight from Joint Base Andrews, Md., to the White House in Washington, D.C., Dec. 20, 2011. (Official White House Photo by Pete Souza)

The Tidal Basin and Washington Monument are visible from the cockpit of Marine One during President Barack Obama’s flight from Joint Base Andrews, Md., to the White House in Washington, D.C., Dec. 20, 2011. (Official White House Photo by Pete Souza)