If you want to hear about the events of Sept. 11, 2001 in vivid detail, look no further than Ari Fleischer’s Twitter feed. Fleischer, a former press secretary to President George W. Bush, was with Bush in Florida on the day of the attacks. In the last few yearss, he’s made a tradition of recounting his memories of what was happening behind-the-scenes on Twitter, from how the president learned of the attacks to the scene afterward on Air Force One. Listen to Fleischer recount the day that changed the world.

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