In honour of the 15th Anniversary of 9/11, National Geographic Channel is looking back at the very best reporting we have done since this world-changing tragedy first happened using extended excerpts from past specials that relate directly to events leading up to and following the attacks on New York City and Washington DC.

The plot follows three friends in New York City whose lives are upended by the 9/11 attacks leading to suspicion, FBI involvement, and a story about friendship, identity, and the aftermath of terrorism.

A fictional investigative documentary looks back on the "assassination" of George W. Bush and attempts to answer the question of who committed the murder. Perhaps less morbid and disturbing to watch now than during Bush's presidency, the film doesn't address Bush's policies at all, instead focusing on the way a nation assigns blame in a time of crisis.

Five random strangers find themselves trapped in an elevator in the World Trade Center's North Tower on 9/11. They work together, never giving up hope, to try to escape before the unthinkable happens.

Two police officers struggle to survive when they become trapped beneath the rubble of the World Trade Center on September 11, 2001.

Based on Mariane Pearl's account of the terrifying and unforgettable story of her husband, Wall Street Journal reporter Danny Pearl's life and death.

One year after 9/11, an American journalist travels to Afghanistan in an effort to learn the truth about the search for Osama bin Laden.

On September 11, 2001, the unimaginable transpired when devastating attacks on the World Trade Center forced the shutdown of the entire U.S. airspace. Thousands of kilometres away in Gander, Newfoundland, a group of Nav Canada air traffic controllers suddenly had the lives of 33,000 people in their hands and had to think fast to find a place for them to go. Discovery uncovers how these unsung heroes managed to safely land 224 planes in four hours, without incident.

Flight 93 is a 2006 made-for-TV film, directed by Peter Markle, which chronicles the events aboard United Airlines Flight 93 during the September 11 attacks. It premiered January 30, 2006 on the A&E Network and was re-broadcast several times throughout 2006. The film focused heavily on eight passengers, namely Todd Beamer, Mark Bingham, Tom Burnett, Jeremy Glick, Lauren Grandcolas, Donald Greene, Nicole Miller, and Honor Elizabeth Wainio. It features small appearances from many other passengers, namely Donald Peterson and his wife, Jean, and also from flight attendant Sandra Bradshaw.

A documentary examining possible historical and modern conspiracies surrounding Christianity, the 9/11 terrorist attacks, and the Federal Reserve bank.

With the departure of the Bush Administration and the arrival of an “era of transparency,” opportunities are arising for the disclosure of new information that may shed more light on the events that took place before and after 9/11/2001. Loaded with powerful, new footage and in-depth interviews this documentary presents a wide array of evidence both known and unknown…until now.

A man with a perspective like no other on the planet. The leading structural engineer of the World Trade Center oversees its construction, haunted by its fall ever since. A guru in high-rise design. Driven by his values as a pacifist and activist and the woman engineer who emboldened, expanded and ultimately saved the man she loved. About fulfillment, fragility, and a fighting spirit.