America After 9/11 — A Living History Curriculum from Homeland Security Today

America After 9/11 — Preserving the Voices That Built America's Homeland Security Enterprise

Twenty-five years later, the people who lived history are teaching the generation that inherited it.

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THE "AMERICA AFTER 9/11" PROJECT

For millions of students today, September 11, 2001 is no longer a lived experience—it's history.

They have never known a world without the U.S. Department of Homeland Security (DHS), the Transportation Security Administration (TSA), terrorism, fusion centers, intelligence sharing, or many of the security measures that have become part of everyday life. To them, these institutions have always existed.

But the story of America after 9/11 is about far more than the attacks themselves. It is the story of how a nation responded—how leaders across government, law enforcement, fire services, emergency management, the military, intelligence community, and the private sector came together to build what we now know as the homeland security enterprise. It is the story behind why DHS was created, how new partnerships and capabilities emerged, and how those decisions continue to shape our security today.

The America After 9/11 Project was created to preserve that story.

Produced by Homeland Security Today, this living history curriculum captures the firsthand experiences of the leaders, first responders, policymakers, intelligence professionals, and emergency managers, who not only responded to the attacks, but went on to build the systems, organizations, and strategies that protect our nation today. Rather than learning solely from textbooks, students will hear directly from the men and women whose leadership transformed tragedy into a new era of homeland security, resilience, and security.

A Note from the Executive Editor
Kristina Tanasichuk
Executive Editor

Kristina Tanasichuk

Executive Editor, Homeland Security Today

Twenty-five years have passed since the terrorist attacks of September 11, 2001.

For many Americans—and virtually every student in our classrooms today—9/11 is history, not memory. They have grown up with the U.S. Department of Homeland Security, airport screening, and countless other security measures as simply “the way things are.” Many do not understand the scope of the DHS mission.

Even fewer understand the “why?”

We’re losing the plot on the threat our nation faced and why we built the institutions meant to meet it.

“Homeland security” did not emerge by accident. It was a purposeful shift of our thinking — in response to a new and malicious threat — around the defense of our citizens and nation. It was built by dedicated public servants, first responders, military leaders, law enforcement professionals, intelligence officers, policymakers, and private sector partners who came together after the worst terrorist attack on American soil.

If we fail to preserve those stories, we risk losing not only our history, but the hard-earned lessons that continue to protect our nation.

That is why Homeland Security Today created the America After 9/11 Project.

We believe there is no substitute for hearing directly from the people who built America’s homeland security enterprise—why they made the decisions they did, what they learned, and what they want the next generation to understand. Their experiences provide context that no textbook can.

Our hope is simple: educate as many students and future leaders as possible so they understand not only what happened on September 11, but why America responded as it did—and why those lessons remain relevant today.

The best way to ensure we never relive the horror of 9/11 is to make sure the next generation understands it.

Thank you for listening. Thank you for seeking to understand the effort that it takes to secure America. Thank you for honoring the victims by becoming part of the reason we never experience another 9/11.

Kara Sidener
Vice Chair

Kara Sidener

Vice Chair, America After 9/11 Project

Former Special Agent, Federal Bureau of Investigation. Criminal Justice I & II Teacher and Law Club Sponsor, Gainesville High School.

Why It Matters

The generation that responded is beginning to retire.

Twenty-five years after September 11, we are approaching a pivotal moment. The generation that responded to the attacks is beginning to retire, and with them goes a depth of experience that exists nowhere else. There is a story behind why it all exists.

  • Every security checkpoint.
  • Every counterterrorism operation.
  • Every intelligence reform.
  • Every aviation security measure.
  • Every emergency response framework.

The America After 9/11 Project preserves the stories of “why” before we lose this critical understanding of our homeland’s security evolution.

Curriculum Overview

Multiple Pieces. One National story.

Use the arrows to move through the slides, or open the full curriculum overview in a new tab.

Learning Objectives

Far more than the events of one day.

The sessions included in the America After 9/11 curriculum examine how America responded and why those decisions continue to shape homeland security today. They seek to describe not simply "What happened?" but "Why do we do things this way today?"

What happened on September 11 The creation of the Department of Homeland Security Intelligence reform and information sharing Counterterrorism and terrorism prevention Aviation and transportation security Emergency management and national preparedness Border security Community resilience Cybersecurity and emerging threats Leadership during national crises Public service and civic responsibility
The Leaders

Taught by the people who were there.

Every session is led by an American hero who responded to the attack and devoted their career to help shape America's response — scroll to meet them.

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Chief Sal Cassano
01
What Happened on 9/11? Inside the Attack and Response

Chief Sal Cassano

Former Commissioner, New York City Fire Department (FDNY)
On 9/11: Assistant Chief, New York City Fire Department (FDNY)

Chief Cassano will open the curriculum by sharing his firsthand experiences responding to the attacks at the World Trade Center on September 11. His presentation will provide an eyewitness account of the courage, sacrifice, and extraordinary challenges faced by first responders during one of the darkest days in American history.

Governor Asa Hutchinson
02
Why and How America Changed After 9/11

Governor Asa Hutchinson

Former Governor of the State of Arkansas; former Congressman; former and first Undersecretary of Homeland Security for Border and Transportation Security
On 9/11: Administrator, Drug Enforcement Agency

Governor Hutchinson will discuss how 9/11 exposed national vulnerabilities, the intelligence-sharing failures, why the 9/11 Commission was created, immediate policy changes, public fear and national unity, and the beginning of the War on Terror.

Patricia Cogswell
03
The Creation of TSA & DHS

Patricia Cogswell

Former Deputy Administrator, Transportation Security Administration; former Assistant Director, U.S. Immigration & Customs Enforcement; former Acting Undersecretary for Intelligence & Analysis, U.S. Department of Homeland Security; former Acting Under Secretary for Policy Integration, and Special Advisor to the President, National Security Council
On 9/11: U.S. Department of Justice

Patty Cogswell will examine how the Department of Homeland Security evolved into the nation's coordinating agency for protecting the homeland, highlighting the continuing challenges of integrating intelligence, operations, policy, and emerging threats.

Holly Canevari
04
How 9/11 Changed Air Travel

Holly Canevari

Former Deputy Administrator, Transportation Security Administration; Chief of Staff, Office of Policy, U.S. Department of Homeland Security; Senior Professional Staff, House Homeland Security Committee
On 9/11: Government Relations Representative, United Technologies Corporation

Holly Canevari will discuss how aviation security fundamentally changed after September 11, the creation and evolution of the Transportation Security Administration, and the balance between security, efficiency, and public trust in protecting America's transportation systems.

Robert Stephan
05
Protecting Critical Infrastructure After 9/11

Robert Stephan

Former Assistant Secretary for Infrastructure Protection; Special Assistant to the Secretary of Homeland Security & Director, Secretary's Operational Integration Staff, U.S. Department of Homeland Security
On 9/11: Senior Director for Critical Infrastructure Protection, Executive Office of the President

Robert Stephan will discuss architecting the nation's critical infrastructure protection plan and the development of the National Incident Management System (NIMS) and the National Response Plan (NRP), which established the Nation's standardized, all-hazards framework for incident management.

Francis X. Taylor
06
Evolution of Terrorism and Intelligence

Francis X. Taylor

Former Under Secretary of Intelligence and Analysis, U.S. Department of Homeland Security; former Assistant Secretary of Diplomatic Security, U.S. Department of State; Air Force Brigadier General (ret)
On 9/11: United States Coordinator for Counterterrorism, U.S. State Department

Francis X. Taylor will examine how terrorism reshaped U.S. national security policy, intelligence integration, and international counterterrorism cooperation while exploring the continuing evolution of the terrorist threat.

Brock Long
07
Building Resilience: Preparedness After 9/11

Brock Long

Former Administrator, Federal Emergency Management Agency (FEMA)

Brock Long will discuss the role of emergency management and how it transformed after September 11, the role of the National Incident Management System (NIMS), disaster preparedness, resilience, and the importance of whole-of-community planning in responding to disasters and terrorist attacks.

Dr. Kimberly O'Connor
08
Building the System We Have Today

Dr. Kimberly O'Connor

Director, Department of Homeland Security, Arizona; former Executive Secretary, U.S. Department of Homeland Security; former Chief of Staff, U.S. Customs and Border Protection; former Senior Advisor to the Director, U.S. Immigration and Customs Enforcement
On 9/11: Director, Division for Substance Abuse Policy, Arizona

Dr. Kimberly O'Connor will explore how homeland security extends far beyond the Department of Homeland Security itself, examining the critical roles of federal, state, local, tribal, and territorial partners; intelligence sharing and fusion centers; preparedness, prevention, protection, response, and recovery; resilience and community involvement; and the interaction of Federal, State, and Local authorities in the defense of the homeland.

Matthew Fodor
09
Future Threat Environment and Civic Responsibility

Matthew Fodor

Director of Operations, National Security Division, Federal Bureau of Investigation; former Deputy Assistant Director, Counterterrorism Division, FBI Headquarters; former Section Chief, Counterterrorism Human Intelligence (HUMINT) Section, FBI Headquarters; former Assistant Section Chief, International Terrorism Operations, FBI Headquarters

Matthew Fodor will explore the evolution of America's threat landscape, including terrorism, violent extremism, online radicalization, extremist recruitment, cyber threats, foreign adversaries, and the evolving tactics used by adversaries to influence and undermine national security. The session will also examine the importance of prevention and the challenges these threats present to the homeland security enterprise.

Kenneth Wainstein
10
Preventing the Next Attack

Kenneth Wainstein

Former Under Secretary for Intelligence and Analysis, U.S. Department of Homeland Security; Homeland Security Advisor to President George W. Bush; Assistant to the President for Homeland Security and Counterterrorism; First Assistant Attorney General for National Security, U.S. Department of Justice; Chief of Staff to FBI Director Robert S. Mueller III, General Counsel, Federal Bureau of Investigation
On 9/11: Acting United States Attorney for the District of Columbia

Kenneth Wainstein will discuss how the nation's security mission evolved after September 11 from primarily investigating crimes after they occurred to preventing terrorist attacks through intelligence, partnerships, Joint Terrorism Task Forces, and information sharing. He will also explain the changes to the national security enterprise and how it was integrated into “homeland security” based on recommendations from the 9/11 commission.

Mubin Shaikh
11
What Is Terrorism? How Do We Prevent It?

Mubin Shaikh

Counter-Extremism Specialist, Parents for Peace (Parents4Peace); former Undercover Counterterrorism Operative, Canadian Intelligence Services, Integrated National Security Enforcement Team (INSET) — Toronto 18 Investigation; former jihadist extremist

Mubin Shaikh will lead a session on terrorism, violent extremism, radicalization, online recruitment, and prevention, helping the understanding of how extremist organizations evolve and how communities play a critical role in preventing violence while preserving democratic values.

Secretary Michael Chertoff
12
What Should Homeland Security Look Like in the Future?

Secretary Michael Chertoff

Former Secretary, U.S. Department of Homeland Security; former Judge, U.S. Court of Appeals for the Third Circuit; former Special Counsel, U.S. Senate Whitewater Committee; former United States Attorney, District of New Jersey
On 9/11: Assistant Attorney General, Criminal Division, U.S. Department of Justice

Michael Chertoff will discuss what homeland security should look like in the future, covering the lessons learned since 9/11, emerging threats, balancing freedom and security, and civic responsibility and informed citizenship.

Built for Educators

Designed for every classroom and community.

Every presentation is professionally recorded and available as an evergreen educational resource that educators can use in full or in part for years to come.

High Schools Colleges and Universities Civic Organizations Public Libraries Museums Youth Leadership Programs Community Organizations Public Safety Academies
A Living History

Understanding America After 9/11

September 11 changed America forever—but the attacks were only the beginning of the story.

The America After 9/11 Project explores how our nation responded by creating what we now know as the homeland security enterprise. Through the firsthand experiences of the leaders who built it, students will gain a deeper understanding of why the Department of Homeland Security was created, how intelligence sharing, aviation security, border security, and terrorism prevention evolved, and how those decisions continue to shape our nation today. By preserving these voices, we ensure that future generations understand not only what happened on September 11, but how America transformed in its aftermath—and why the lessons, leadership, innovation, resilience, and public service that emerged remain essential to safeguarding our homeland.

Because history is best told by the people who lived it.

Bring these voices to your classroom.

Sign up to receive the America After 9/11 curriculum when it launches this September.