911 Cleared for Chaos

On September 11 2001 the unimaginable transpired when devastating attacks on the World Trade Center forced the shutdown of the entire US airspace Thousands of kilometres away in Gander Newfoundland a group of Nav Canada air traffic controllers suddenly had the lives of 33000 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