About this showing of Inside 9/11
How did al-Qaeda manage to outmanoeuvre US intelligence by placing four undetected militants on a course to learn how to fly commercial aircraft? 7+.
Previously on TV
Inside 9/11
Countdown To Terror
Previously shown on National Geographic on Fri 11 Sep 2026 at 15:00.
This showing has ended
This showing was on National Geographic at 15:00 on Fri 11 Sep 2026. See future airings below or open the main programme page for the latest TV times.
Airing details
ChannelNational Geographic
StartsFri 11 Sep 2026, 15:00
EndsFri 11 Sep 2026, 16:00
Episode / edition: Countdown To Terror
SkySky Q / Satellite129