A Shock, Not a Surprise: Twenty-Five Years After September 11, What the Warnings Taught Us and What We Owe the Dead

On Friday, September 11, 2026, an entire generation of Americans will mark the twenty-fifth anniversary of a day they never lived through. This year’s Patriot Day proclamation put it plainly: “an entire generation of Americans has now come of age with no living memory of that fateful day.”¹ For those of us who do remember, the day is not history. It is a scar that still aches in certain weather. And the question this anniversary asks is not only what we remember, but what we learned, and what we owe.

The 9/11 Commission, the bipartisan body that reviewed more than 2.5 million pages of documents and interviewed more than 1,200 people to answer how the attacks happened, delivered its verdict in a single sentence: “The 9/11 attacks were a shock, but they should not have come as a surprise.”² That sentence is the whole story in miniature. The shock was real, and it was earned. The surprise was not. The warnings were there, in plain sight, for years. The failures that let the plot through were specific, documented, and human. And the lessons, twenty-five years later, are still being learned, and still being ignored.

The road to the day

The road to September 11 began long before nineteen hijackers boarded four planes on a clear Tuesday morning. It began in February 1993, when a group led by Ramzi Yousef tried to bring down the World Trade Center with a truck bomb, killing six people and wounding a thousand.³ It continued in early 1995, when police in Manila uncovered the Bojinka plot: Yousef and his uncle Khalid Sheikh Mohammed planned to blow up eleven American airliners over the Pacific, killing an estimated four thousand passengers, and to crash a plane into the headquarters of the CIA.⁴ The plot was disrupted by accident, when a chemical fire in a Manila apartment drew police attention. The man who confessed to the plane-into-CIA-headquarters idea, Abdul Hakim Murad, had trained as a pilot in North Carolina.⁵

The warnings kept coming. In February 1998, Osama bin Laden and four others issued a fatwa declaring it “the individual duty for every Muslim” to kill Americans, military or civilian, anywhere in the world.⁶ In August 1998, al Qaeda bombed the U.S. embassies in Kenya and Tanzania, killing 224 people, including twelve Americans.⁷ In December 1999, Jordanian police foiled a plot to bomb sites frequented by American tourists, and a U.S. Customs agent caught Ahmed Ressam crossing the Canadian border with explosives intended for Los Angeles International Airport.⁸ In October 2000, al Qaeda blew a hole in the side of the USS Cole in Yemen, killing seventeen American sailors.⁹

The Commission’s account of what the government knew is damning precisely because it is so ordinary. A 1995 National Intelligence Estimate predicted terrorist attacks against the United States, and in the United States, naming the White House, the Capitol, Wall Street, power grids, sports arenas, and civil aviation as specific points of vulnerability.¹⁰ The 1997 update mentioned bin Laden in only three sentences of a six-page report, and it was the last national estimate on the terrorism danger completed before September 11.¹¹ The Gore Commission, created after the crash of TWA Flight 800 to study aviation security, did not mention suicide hijackings or the use of aircraft as weapons in its 1997 report.¹² The FAA, in a presentation to air carriers in the summer of 2001, mentioned the possibility of suicide hijackings but added that “fortunately, we have no indication that any group is currently thinking in that direction.”¹³

The summer the system blinked red

The summer of 2001 was not a quiet summer. It was, in the words of CIA Director George Tenet, the summer “the system was blinking red.”¹⁴ Threat reporting surged to its highest level since the millennium alert. In May, the chief of the CIA’s Counterterrorist Center told National Security Advisor Condoleezza Rice that the current threat level was a seven on a scale of ten, compared to an eight during the millennium.¹⁵ In June, a terrorist threat advisory warned of a “high probability of near-term ‘spectacular’ terrorist attacks” resulting in numerous casualties.¹⁶ Reports carried titles like “Bin Ladin Attacks May be Imminent” and “Bin Ladin and Associates Making Near-Term Threats.”¹⁷ One al Qaeda intelligence report warned that something “very, very, very, very” big was about to happen.¹⁸ The CIA ordered all its station chiefs to share information on al Qaeda with host governments and to push for immediate disruptions of cells.¹⁹ Disruption operations were launched in twenty countries.²⁰

And yet. The specific threat information pointed overseas. The domestic agencies were not mobilized. The FBI’s July 2 advisory to federal, state, and local law enforcement said there was “no information indicating a credible threat of terrorist attack in the United States,” while adding that the possibility could not be discounted.²¹ At the July 5 meeting between the White House counterterrorism coordinator and the domestic agencies, attendees were told not to disseminate the threat information, and an INS representative who asked for a summary she could share with field offices never received one.²² The FAA’s information circulars mostly urged air carriers to “exercise prudence” and be alert.²³ None of the security directives released during the summer increased security at checkpoints or on board aircraft.²⁴

On August 6, 2001, President Bush received a Presidential Daily Brief item titled “Bin Ladin Determined To Strike in US.”²⁵ It was the thirty-sixth PDB item that year relating to bin Laden or al Qaeda, and the first devoted to the possibility of an attack in the United States.²⁶ It noted “patterns of suspicious activity in this country consistent with preparations for hijackings or other types of attacks” and reported that the FBI was conducting approximately seventy bin Laden-related investigations.²⁷ The President later told the Commission he regarded the report as historical in nature.²⁸ No NSC meeting was held to discuss it.²⁹

The specific failures of that summer are the ones that still hurt, because they were so close. Khalid al Mihdhar, one of the future hijackers, was known to the CIA to be an al Qaeda operative with a U.S. visa as early as January 2000, when the agency photographed him at a meeting in Kuala Lumpur with a known terrorist.³⁰ The CIA did not put him on the State Department’s watchlist, and did not tell the FBI.³¹ Mihdhar entered the United States on January 15, 2000, and again on July 4, 2001.³² He was not watchlisted until August 24, 2001, and the FBI lead to find him was labeled “Routine,” giving the receiving office thirty days to respond.³³ The search was assigned to one agent, on his very first counterterrorism lead.³⁴ The Commission concluded that both Mihdhar and his companion Nawaf al Hazmi “could have been held for immigration violations or as material witnesses,” and that “the simple fact of their detention could have derailed the plan.”³⁵

In July 2001, an FBI agent in Phoenix sent a memo to headquarters warning of “the possibility of a coordinated effort by Usama Bin Ladin” to send students to U.S. civil aviation schools, and recommending a nationwide canvass.³⁶ The managers to whom it was addressed did not see it until after September 11.³⁷

In August 2001, the FBI arrested Zacarias Moussaoui, a French national taking flight training on Boeing 747 simulators who wanted to learn how to “take off and land” a 747 and had no intention of becoming a commercial pilot.³⁸ The Minneapolis field office wanted to search his laptop. FBI headquarters refused, on the grounds that there was insufficient probable cause.³⁹ A Minneapolis supervisor told a headquarters agent he was “trying to keep someone from taking a plane and crashing into the World Trade Center.” The headquarters agent replied that this was not going to happen.⁴⁰ The Commission found that a maximum effort to investigate Moussaoui “conceivably could have unearthed his connections” to the plot’s coordinator, and that “publicity about Moussaoui’s arrest and a possible hijacking threat might have derailed the plot.”⁴¹

Richard Clarke, the White House counterterrorism coordinator, wrote to Rice on September 4, 2001, asking the question the government had never answered: “Is al Qida a big deal?”⁴² A week later came the answer.

The day itself

The day itself is seared into the memory of everyone old enough to remember it, and it belongs now to everyone else as well. At 8:46 a.m., American Airlines Flight 11 crashed into the North Tower of the World Trade Center. At 9:03, United Airlines Flight 175 hit the South Tower. At 9:37, American Airlines Flight 77 struck the Pentagon. At 10:03, United Airlines Flight 93 crashed into a field in Shanksville, Pennsylvania, after its passengers, who had learned from phone calls what the hijackers intended, fought back.⁴³ The plane was about twenty minutes from Washington.⁴⁴ Todd Beamer’s last words, relayed by a phone operator, were “Are you ready? Okay. Let’s roll.”⁴⁵

The toll: 2,977 people killed, including 2,606 at the World Trade Center, 125 at the Pentagon, and 246 on the four planes, plus the nineteen hijackers.⁴⁶ Three hundred forty-three firefighters, 72 law enforcement officers, and 55 military personnel died.⁴⁷ Citizens of more than ninety countries died.⁴⁸ More than three thousand children lost a parent.⁴⁹ It remains the deadliest terrorist attack in history, and the deadliest incident for firefighters and law enforcement in American history.⁵⁰

The response was improvised, because nothing had prepared anyone for it. The FAA and NORAD had nine minutes’ notice on the first hijacked plane and no advance notice on the others.⁵¹ The fighters scrambled from Langley flew east, over the ocean, because a generic flight plan led them to believe they were ordered to fly due east for sixty miles.⁵² The shootdown authorization was not communicated to the air defense sector until twenty-eight minutes after United 93 had crashed.⁵³ The only orders actually conveyed to the pilots were to “ID type and tail,” not to “take out” hostile aircraft.⁵⁴ In New York, the fire department, police, and Port Authority could not communicate with one another, and many firefighters never heard the evacuation orders because of malfunctioning radio repeaters.⁵⁵

And yet, in the same improvised chaos, the response saved lives. All but approximately one hundred of the thousands of civilians who worked below the impact zones escaped, often with help from the emergency responders.⁵⁶ The passengers of Flight 93 denied the hijackers their target. The Pentagon’s emergency response, using the Incident Command System, was generally effective.⁵⁷ The Commission, which was not given to sentiment, wrote that the civilians, firefighters, police officers, and emergency medical technicians “exhibited steady determination and resolve under horrifying, overwhelming conditions,” and that their actions “saved lives and inspired a nation.”⁵⁸

The four failures

The Commission’s verdict on how the attacks happened is the most important paragraph in the report: “We believe the 9/11 attacks revealed four kinds of failures: in imagination, policy, capabilities, and management.”⁵⁹

The most important failure was one of imagination.⁶⁰ The Commission wrote that leaders did not understand the gravity of the threat.⁶¹ The danger was not a major topic of public debate, barely came up in the 2000 presidential campaign, and was not the subject of a new national intelligence estimate on terrorism between 1997 and September 11.⁶² The threat of aircraft as weapons was imaginable, and had been imagined: the Bojinka plot’s plane-into-CIA-headquarters plan, the 1994 Air France hijacking in which Algerian militants intended to crash a plane into the Eiffel Tower, the 1995 Manila confession, the 1999 EgyptAir crash that bin Laden later cited as the inspiration for the idea.⁶³ But no one in the government connected the dots, because no one had built a system for imagining the unthinkable. The Commission’s phrase is precise: “no analytic work foresaw the lightning that could connect the thundercloud to the ground.”⁶⁴

The failure of policy was that terrorism was not the overriding national security concern of either administration.⁶⁵ The failure of capabilities was that the United States tried to solve the al Qaeda problem with the tools of the Cold War, and the domestic agencies, the FBI, the FAA, the INS, were the weakest links.⁶⁶ The failure of management was that no one had the job of making the pieces fit together.⁶⁷ The Commission’s metaphor is the one that still stings: the agencies were “like a set of specialists in a hospital, each ordering tests, looking for symptoms, and prescribing medications. What is missing is the attending physician who makes sure they work as a team.”⁶⁸

The deepest structural cause was the wall. Attorney General John Ashcroft, testifying before the Commission, called it “the single greatest structural cause for the September 11th problem”: the wall that segregated criminal investigators from intelligence agents, born of well-intentioned reforms after abuses, and hardened by confusion and fear.⁶⁹ The wall is why the FBI agents who knew al Qaeda best were excluded from the search for Mihdhar and Hazmi.⁷⁰ It is why the CIA analyst who knew that Mihdhar had a U.S. visa and intended to travel to New York did not volunteer it at a meeting with FBI agents, and why no one asked him.⁷¹ It is why the FBI agent who found the source was “being kept from obtaining the fruits of their own work.”⁷²

Could it have been prevented?

The honest answer, the one the Commission itself gave, is that we cannot know. “Since the plotters were flexible and resourceful, we cannot know whether any single step or series of steps would have defeated them.”⁷³ The plot was redundant: four planes, multiple cells, years of training, operatives who had already demonstrated they could adapt when one of their number was denied entry.⁷⁴ No single action can be proven to have been the one that would have stopped it.

But the Commission was equally clear about what it could say with confidence: “none of the measures adopted by the U.S. government from 1998 to 2001 disturbed or even delayed the progress of the al Qaeda plot.”⁷⁵ The government had multiple documented opportunities to disrupt the plot, and took none of them. The watchlist that would have caught Mihdhar at the border. The laptop that would have revealed Moussaoui’s connections. The memo that would have sensitized the FBI to flight training as a warning sign. The threat reporting that should have made the search for two known al Qaeda operatives in the United States a national priority instead of a routine lead.⁷⁶ The Commission listed ten specific operational opportunities, from January 2000 to August 2001, and every one of them was missed.⁷⁷

The counterfactual is a form of grief. It is the mind’s way of asking whether the dead could have been spared by a different choice. The honest answer is that they might have been, and that the system failed at nearly every point where it could have caught them. The Commission refused to say that any single action would have stopped the attacks, and it was right to refuse. But it said something harder: the system was built so that no single person’s vigilance could save it, and no single person’s failure doomed it. The failure was collective, institutional, and human. It was a failure of imagination, policy, capabilities, and management. It was a failure that could have been prevented, and it was not.

What we built, and what it cost

The aftermath of September 11 remade the American government and the American world. The Department of Homeland Security was created, the largest restructuring of the federal government in contemporary history.⁷⁸ The Transportation Security Administration took over airport security.⁷⁹ Cockpit doors were hardened, no-fly lists were expanded, federal air marshals were deployed.⁸⁰ The USA PATRIOT Act expanded surveillance powers, and the NSA began warrantless collection of communications data.⁸¹ NATO invoked Article 5 for the first time in its history.⁸² The Authorization for Use of Military Force, passed on September 14, 2001, remains in effect today.⁸³ The war in Afghanistan began on October 7, 2001.⁸⁴ The war in Iraq followed in 2003, on grounds that were later conceded to be false.⁸⁵ Osama bin Laden was killed by U.S. special operations forces on May 2, 2011.⁸⁶

The costs are not abstract. The Costs of War Project at Brown University estimates that the post-9/11 wars have killed between 4.5 and 4.6 million people, directly and indirectly, and cost more than $8 trillion.⁸⁷ An estimated 38 million people have been displaced.⁸⁸ The wars in Afghanistan and Iraq, the drone campaigns, the black sites, the torture, the surveillance state, the erosion of civil liberties: all of it was justified in the name of the day, and all of it was paid for, in blood and treasure and principle, by people who were not in the towers.⁸⁹

The health crisis at home continues. More than 18,000 people have developed illnesses from the toxic dust of Ground Zero.⁹⁰ As of 2023, the FDNY had lost as many members to 9/11-related illness as it did on the day itself: 343.⁹¹ As of 2025, 1,103 victims of the World Trade Center attacks, 40 percent of the dead, remain unidentified.⁹² The identification work continues, one name at a time, in a laboratory that has become a kind of memorial itself.

And the unity did not last. The Commission’s report, delivered without dissent by five Republicans and five Democrats in 2004, is a document from a different country.⁹³ The America that came together in the weeks after the attacks, the America that flew flags and stood in line to give blood and prayed together, is hard to recognize in the America of 2026, a country that has spent the quarter century since the day learning to see one another as enemies.⁹⁴ The terrorists wanted to break the American spirit. They failed. But the spirit they failed to break has been fraying ever since, by our own hands, in our own arguments, at our own pace.

What the day revealed

And yet. The anniversary is not only an accounting of failure and cost. It is also a record of what the day revealed about Americans, and that record is the reason the conclusion of this essay can be hopeful without being naive.

The day revealed that ordinary people, confronted with the unthinkable, will do extraordinary things. The forty passengers and crew of Flight 93, who had no training, no weapons, and no chance, chose to fight, and in fighting, saved the Capitol or the White House from destruction.⁹⁵ The first responders who walked into burning towers while everyone else was walking out. The office workers who carried strangers down a hundred flights of stairs. The ironworkers and the volunteers who worked the pile for months, not for pay, but because the dead deserved to be found. The people who stood in line for hours to give blood, and were turned away because there was too much.⁹⁶

The day revealed that the country could mobilize itself when it chose to. The Commission’s most hopeful finding was the millennium exception: in December 1999, when the Jordanian plot was foiled and Ahmed Ressam was caught at the border, the government acted in concert, information flowed, and the public was on alert.⁹⁷ The Commission’s point was that the capability existed. The government was capable of mobilizing against terrorism. It simply did not, in the summer of 2001, because the threat was secret and the public was not warned.⁹⁸ The lesson is not that Americans are incapable of vigilance. The lesson is that vigilance requires information, and information requires sharing, and sharing requires trust.

The day revealed that the country could rebuild. The site of the World Trade Center is now a place of reflection and renewal: the two reflecting pools in the footprints of the towers, the names of the dead carved in bronze, the museum, the new towers rising around them, One World Trade Center at 1,776 feet, the tallest building in the Western Hemisphere.⁹⁹ The Pentagon was repaired within a year, and its memorial, 184 benches facing the building, was completed on the seventh anniversary.¹⁰⁰ The Flight 93 National Memorial stands in a quiet Pennsylvania field, its Wall of Names aligned with the path of the plane.¹⁰¹ Every year, on September 11, the names are read aloud in New York, and the reading takes hours, and the country stops.¹⁰²

The day revealed that the dead are not statistics. They are names, and the names are read every year, and the reading is the point. The 2,977 names include the Cantor Fitzgerald employees who worked on the 101st to 105th floors of the North Tower, 658 of them, the single greatest loss of any employer.¹⁰³ They include the 343 firefighters. They include the passengers and crew of four planes. They include people from more than ninety countries, of every faith and none, every age, every walk of life. The memorial’s design is called Reflecting Absence, and the name is the theology of the day: the absence is real, and the reflection is what we do with it.¹⁰⁴

What we owe the dead

Twenty-five years is a long time, and a short one. It is long enough for an entire generation to come of age with no living memory of the day. It is short enough that the grief is still carried by people who are still alive, and the lawsuits are still being settled, and the unidentified dead are still being identified, one by one, in a laboratory.

What do we owe them? The easy answer is memory, and memory matters. The names must be read. The story must be told, to the generation that did not live it, and to the generation after that. The Commission’s report should be read by every American who wants to understand how a democracy fails to protect itself, because it is the most honest autopsy of a national failure ever written, and because its lessons are not about 2001. They are about every year since.

The harder answer is that we owe the dead the lessons. We owe them a government that does not depend on the right person being in the room. We owe them a system where information flows across the walls, where the attending physician exists, where imagination is institutionalized rather than left to individuals. We owe them vigilance that does not require a catastrophe to activate. We owe them a country that can mobilize against a threat without surrendering the principles the threat hates. We owe them the unity we showed in the weeks after the day, not as a memory to be nostalgic about, but as a standard to be met.

And we owe them the thing the day itself taught, the thing the memorials say in stone and water and light: that the response to horror is not despair, but love. The people who ran into the towers were not running toward death. They were running toward one another. The passengers of Flight 93 did not die for an idea. They died for the people on the plane with them, and for the people in the building they never reached. The volunteers who worked the pile did not work for a cause. They worked for the dead, and for the families of the dead, and for the idea that no one should be left behind.

The credo of this site is “Think clearly. Live intentionally. Love deeply.” September 11, 2001, was a day when thinking clearly failed, when the system that was supposed to protect the country could not imagine the threat, could not share the information, could not connect the dots. It was a day when living intentionally meant, for 2,977 people, that their last act was to be present, to be brave, to be human. And it was a day when loving deeply was the only thing that worked: the love that made people run in, the love that made strangers carry strangers down a hundred flights of stairs, the love that made a country, for a few weeks, one people.

The towers fell. The light they let through did not. Twenty-five years later, the question is not whether we remember. It is whether we are worthy of what the day revealed about us: that we are capable of more than we know, that we are stronger together than we are apart, and that the dead are not gone as long as we carry what they taught us.

Never forget. And then, harder: never stop learning.

Notes

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