The US Army firing cannons at Arlington National Cemetery.
"The "Guns" Platoon currently assigned to HHC 1st Battalion, 3d U.S. Infantry (The Old Guard) has been located on Ft. Myer since 1953. The platoon is equipped with 10 guns and uses batteries composed of two, three, or four guns to render honors in ceremonies on behalf of the Army, Air Force, Navy, Marine Corps, and Coast Guard. Batteries fire at all general officer funerals in Arlington National Cemetery, wreath-laying ceremonies at the Tomb of the Unknown Soldier, and arrivals and departures of foreign dignitaries at Fort Myer, the Pentagon, the White House, and Andrews Air Force Base. Every year the Presidential Salute Battery joins the National Symphony Orchestra on the 4th of July to perform the 1812 Overture as it was originally written. Noteworthy ceremonies include the following: participation in every Presidential Inauguration since President Eisenhower's in 1956, President Kennedy's, Reagan's Ford's, and Nixon's state funeral, the internment of World War II, Korea, and Vietnam unknowns."