Read the given passage and answer questions that follow.
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Tuesday, September 11, 2001, began like any other late-summer morning in the eastern United States — mild, sunlit, and calm. The sky over New York City was an unbroken blue, reflecting off the glass façades of its skyscrapers. Across the country, millions stirred into their daily rhythm — parents preparing children for school, commuters boarding trains, and office workers hurrying toward another routine day. In Lower Manhattan, thousands made their way into the Twin Towers, the proud centerpiece of the World Trade Center complex, unaware that history was quietly converging upon them.
In Arlington, Virginia, the Pentagon’s corridors filled with the measured pace of military precision, while across the Potomac River, Congress reconvened in session, its agenda focused on domestic policy and budgetary matters. At the White House, tourists gathered expectantly for their morning tours, cameras ready to capture an ordinary day in the capital.
Farther south, in Sarasota, Florida, President George W Bush began his day with an early jog before visiting a local school to discuss education reform. Air traffic across the nation operated under perfect conditions — clear skies and steady winds, ideal for flying. Among the countless travellers navigating airports that morning were two men, Mohamed Atta and Abdul Aziz al-Omari, who arrived quietly at Portland International Jetport in Maine.
No one yet knew that within hours, this serene morning would fracture into one of the darkest days in modern history — when calm skies became witnesses to unimaginable tragedy.