Lincoln@Gettysburg

We'll take to the skies with the presidential helicopter Marine One as it flies to the nation's largest city. To protect the President, Marine One must flawlessly coordinate with the Marines, the New York Police Department, and the Secret Service.

Dr. Bob Ballard explores the histories and the final resting places of famous 20th-century passenger liners, including the Titanic, the Lusitania, and the Empress of Ireland.

In the National Geographic Channel special, “George W. Bush: The 9-11 Interview,” the former President talks about the chaotic moments after the attacks and the reasoning behind decisions he made that day. Bush reflects on being told about the attacks while visiting schoolchildren in Florida and the difficulty in getting accurate information in what he calls “the fog of war.” He also talks about returning to the White House to address Americans in the hours after the terrorist attacks. Fearing a possible psychological boost for al-Qaeda, Bush said he, quote, “damn sure wasn’t going to give it from a bunker in Nebraska.” The former President recalls the emotional visit to Ground Zero just three days after the World Trade Center Towers were destroyed. He describes “a palpable bloodlust” among workers in the ruins who were encouraging him to retaliate against those behind the attacks.

Documentary about the search for Gus Grissom's Mercury capsule, the Liberty Bell 7, that was lost in the Atlantic after splashdown.

National Geographic takes you on an exclusive tour inside Air Force One, part luxury hotel, part super-secret military command post. From its beginnings with President Roosevelt making a secret wartime flight in 1943 - to the historic flight that returned President Kennedy's body to Washington after his assassination - to the closing months of the Clinton administration, Air Force One takes you through the history of the world's most powerful plane. Features exclusive interviews with Presidents George W. Bush, William Jefferson Clinton, George H. W. Bush, and Jimmy Carter.

The Watergate case was the original game changer of America politics. How has Watergate changed the Presidency? What effect has the scandal had on our political leaders? And has hope and optimism forever been replaced in our national dialogue by doubt and cynicism? In 1973, Watergate's most pivotal year, reporters Bob Woodward and Carl Bernstein doggedly investigated the scandal exposing the long, twisted trail of cover-ups and lies.

The life and career of jazz musician Ron Carter, the most recorded bassist in history, featuring original concert footage and insights from jazz icons.

Learn about "white hat" hackers, the U.S. Secret Service's cyber crime division working to protect us from the risks associated with persistent connectivity.

National Geographic follows underwater explorer Bob Ballard as he searches for the aircraft carrier sunk during the Battle of Midway.