National Threat Assessment Center
Source: https://www.secretservice.gov/protection/ntac
Archived: 2026-04-23 15:01
National Threat Assessment Center
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REPORTS
Aligning Behavioral Threat Assessment and Management With a Multi-Tiered System of Support
New NTAC guidance describes how education practitioners can best align BTAM programs alongside multi-tiered systems of support (MTSS) in K-12 schools.
READ MORE
Image
REPORTS
NTAC Case Study Links Domestic Violence, Mass Attacks
The latest case study by the National Threat Assessment Center analyzes the mass shooting at the First Baptist Church in Sutherland Springs, TX, finding a connection between domestic violence and mass attacks.
READ MORE
Image
School/Campus Attacks
Improving School Safety Through Bystander Reporting: A Toolkit for Strengthening K-12 Reporting Programs
New NTAC resource offers strategies for K-12 schools to enhance bystander reporting programs
READ MORE
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Pause
Next
National Threat Assessment Center
The National Threat Assessment Center (NTAC) was established as a component of the Secret Service in 1998 to provide research and guidance in direct support of the Secret Service protective mission, and to others with public safety responsibilities.
The center’s staff is composed of a multidisciplinary team of social science researchers and regional program managers who support and empower our partners in law enforcement, schools, government, and other public and private sector organizations to combat the ever-evolving threat of targeted violence impacting communities across the United States.
Sign up for NTAC news
Sign up for Live Virtual Events
View NTAC research videos
NTAC Chief Dr. Lina Alathari
Our Latest Research
View our latest research below:
The State of Behavioral Threat Assessment and Management in K–12 Public Schools
Findings from a 2025 American School Leader Panel Survey
Read Report
Aligning Behavioral Threat Assessment and Management With a Multi-Tiered System of Support
Building a Continuum of Prevention and Intervention
Read Report
First Baptist Church of Sutherland Springs
A Case Study on the Link Between Domestic Violence and Mass Attacks.
Read Report
Behavioral Threat Assessment Units
A Guide for State and Local Law Enforcement to Prevent Targeted Violence.
Read Report
View All of Our Research
School and Campus Safety
Nov 2025
The State of Behavioral Threat Assessment and Management in K-12 Public Schools
Aug 2025
Aligning Behavioral Threat Assessment and Management With a Multi-Tiered System of Support: Building a Continuum of Prevention and Intervention
May 2023
Improving School Safety Through Bystander Reporting
Jan 2022
What Is a Behavioral Threat Assessment in School?
Mar 2021
Averting Targeted School Violence: A U.S. Secret Service Analysis of Plots Against Schools
Nov 2019
Protecting America’s Schools: A U.S. Secret Service Analysis of Targeted School Violence
Jul 2018
Enhancing School Safety Using a Threat Assessment Model: An Operational Guide for Preventing Targeted School Violence
Apr 2010
Campus Attacks: Targeted Violence Affecting Institutions of Higher Education
May 2008
Prior Knowledge of Potential School-Based Violence: Information Students Learn May Prevent a Targeted Attack
May 2002
Threat Assessment in Schools: A Guide to Managing Threatening Situations and to Creating Safe School Climates
May 2002
The Final Report and Findings of the Safe School Initiative: Implications for the Prevention of School Attacks in the United States
Behavioral Case Studies
Apr 2025
First Baptist Church of Sutherland Springs: A Case Study on the Link Between Domestic Violence and Mass Attacks
Mar 2022
Hot Yoga Tallahassee: A Case Study of Misogynistic Extremism
Oct 2017
The Congressional Shooter: A Behavioral Review of James Hodgkinson
Dec 2015
Exploring the Effect of Stressors in Threat Assessment Investigations: A Case Study on Bart Allen Ross
Dec 2015
Using a Systems Approach for Threat Assessment Investigations: A Case Study on Jared Lee Loughner
Dec 2015
Investigating Ideologically Inspired Violent Extremists: Local Partners Are an Asset: A Case Study on Abdulhakim Mujahid Muhammad
Guidance for Law Enforcement
Oct 2024
Behavioral Threat Assessment Units: A Guide for State and Local Law Enforcement to Prevent Targeted Violence
Jul 1998
Protective Intelligence & Threat Assessment Investigations: A Guide for State and Local Law Enforcement Officials
Mass Attacks in Public Spaces
Jan 2023
Mass Attacks in Public Spaces: 2016-2020
Aug 2020
Mass Attacks in Public Spaces - 2019
Jul 2019
Mass Attacks in Public Spaces - 2018
Mar 2018
Mass Attacks in Public Spaces - 2017
Attacks Against Government
Dec 2015
Attacks on U.S. Federal Government 2001–2013: Threat Assessment Considerations
Mar 1999
Assassination in the United States: An Operational Study of Recent Assassins, Attackers, and Near Lethal Approachers
Photo Gallery
NTAC Chief Dr. Lina Alathari and Supervisory Social Science Research Specialist Steven Driscoll present the findings from NTAC’s "Mass Attacks in Public Spaces - 2018" report in Washington, D.C.
NTAC Chief Dr. Lina Alathari and Supervisory Social Science Research Specialist Steven Driscoll present the findings from NTAC’s "Protecting America’s Schools" report in Chicago, Illinois, in 2019.
NTAC Chief Dr. Lina Alathari participates in a press conference for NTAC’s "Mass Attacks in Public Spaces - 2018" report in Washington, D.C.
Director James T. Murray participates in a press conference for NTAC’s "Protecting America’s Schools" report at Secret Service Headquarters in Washington, D.C., in 2019.
Deputy Director Leon Newsome introduces NTAC’s "Protecting America’s Schools" report in Chicago in 2019.
Supervisory Social Science Research Specialist Steven Driscoll presents NTAC's research, "Mass Attacks in Public Spaces - 2019," at a press conference in Washington, D.C., Aug. 6, 2020.
NTAC Chief Dr. Lina Alathari announces the team's latest research, "Mass Attacks in Public Spaces - 2019," at a press conference in Washington, D.C., Aug. 6, 2020.
NTAC Supervisors Steven Driscoll and Diana Drysdale accept the 2019 DHS Secretary’s Award for Excellence on behalf of the NTAC team.
Deputy Director Leon Newsome introduces NTAC’s “Protecting America’s Schools” report in Chicago in 2019.
Return to top of page
About Us
Leadership
History
150+ Years of History
The Evolution of Our Badges
Wall of Honor
Protection
Protecting Leaders
Safeguarding Places
Securing Events
National Threat Assessment Center
Investigations
Counterfeit Investigations
Financial Investigations
Cyber Investigations
Forensic Expertise
Most Wanted Fugitives
Seeking Information
Avoid Scams
Mission Support
Newsroom
Behind the Shades
Press Releases
Speeches and Testimony
Videos
Social Media
Careers
Application Tracker
Secret Service Police
SPEAR
Special Agent
Special Agent Talent & Achievement Recruitment
Special Operations Division - Counter Assault Team
Technical Law Enforcement
Administrative, Professional and Technical
Student Employment
Veterans
Career events
Employee & Family Support
Contact
Field Offices
Skip to main content
Official websites use .gov
A
.gov
website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A
lock
(
)
or
https://
means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Image
REPORTS
Aligning Behavioral Threat Assessment and Management With a Multi-Tiered System of Support
New NTAC guidance describes how education practitioners can best align BTAM programs alongside multi-tiered systems of support (MTSS) in K-12 schools.
READ MORE
Image
REPORTS
NTAC Case Study Links Domestic Violence, Mass Attacks
The latest case study by the National Threat Assessment Center analyzes the mass shooting at the First Baptist Church in Sutherland Springs, TX, finding a connection between domestic violence and mass attacks.
READ MORE
Image
School/Campus Attacks
Improving School Safety Through Bystander Reporting: A Toolkit for Strengthening K-12 Reporting Programs
New NTAC resource offers strategies for K-12 schools to enhance bystander reporting programs
READ MORE
Previous
Pause
Next
National Threat Assessment Center
The National Threat Assessment Center (NTAC) was established as a component of the Secret Service in 1998 to provide research and guidance in direct support of the Secret Service protective mission, and to others with public safety responsibilities.
The center’s staff is composed of a multidisciplinary team of social science researchers and regional program managers who support and empower our partners in law enforcement, schools, government, and other public and private sector organizations to combat the ever-evolving threat of targeted violence impacting communities across the United States.
Sign up for NTAC news
Sign up for Live Virtual Events
View NTAC research videos
NTAC Chief Dr. Lina Alathari
Our Latest Research
View our latest research below:
The State of Behavioral Threat Assessment and Management in K–12 Public Schools
Findings from a 2025 American School Leader Panel Survey
Read Report
Aligning Behavioral Threat Assessment and Management With a Multi-Tiered System of Support
Building a Continuum of Prevention and Intervention
Read Report
First Baptist Church of Sutherland Springs
A Case Study on the Link Between Domestic Violence and Mass Attacks.
Read Report
Behavioral Threat Assessment Units
A Guide for State and Local Law Enforcement to Prevent Targeted Violence.
Read Report
View All of Our Research
School and Campus Safety
Nov 2025
The State of Behavioral Threat Assessment and Management in K-12 Public Schools
Aug 2025
Aligning Behavioral Threat Assessment and Management With a Multi-Tiered System of Support: Building a Continuum of Prevention and Intervention
May 2023
Improving School Safety Through Bystander Reporting
Jan 2022
What Is a Behavioral Threat Assessment in School?
Mar 2021
Averting Targeted School Violence: A U.S. Secret Service Analysis of Plots Against Schools
Nov 2019
Protecting America’s Schools: A U.S. Secret Service Analysis of Targeted School Violence
Jul 2018
Enhancing School Safety Using a Threat Assessment Model: An Operational Guide for Preventing Targeted School Violence
Apr 2010
Campus Attacks: Targeted Violence Affecting Institutions of Higher Education
May 2008
Prior Knowledge of Potential School-Based Violence: Information Students Learn May Prevent a Targeted Attack
May 2002
Threat Assessment in Schools: A Guide to Managing Threatening Situations and to Creating Safe School Climates
May 2002
The Final Report and Findings of the Safe School Initiative: Implications for the Prevention of School Attacks in the United States
Behavioral Case Studies
Apr 2025
First Baptist Church of Sutherland Springs: A Case Study on the Link Between Domestic Violence and Mass Attacks
Mar 2022
Hot Yoga Tallahassee: A Case Study of Misogynistic Extremism
Oct 2017
The Congressional Shooter: A Behavioral Review of James Hodgkinson
Dec 2015
Exploring the Effect of Stressors in Threat Assessment Investigations: A Case Study on Bart Allen Ross
Dec 2015
Using a Systems Approach for Threat Assessment Investigations: A Case Study on Jared Lee Loughner
Dec 2015
Investigating Ideologically Inspired Violent Extremists: Local Partners Are an Asset: A Case Study on Abdulhakim Mujahid Muhammad
Guidance for Law Enforcement
Oct 2024
Behavioral Threat Assessment Units: A Guide for State and Local Law Enforcement to Prevent Targeted Violence
Jul 1998
Protective Intelligence & Threat Assessment Investigations: A Guide for State and Local Law Enforcement Officials
Mass Attacks in Public Spaces
Jan 2023
Mass Attacks in Public Spaces: 2016-2020
Aug 2020
Mass Attacks in Public Spaces - 2019
Jul 2019
Mass Attacks in Public Spaces - 2018
Mar 2018
Mass Attacks in Public Spaces - 2017
Attacks Against Government
Dec 2015
Attacks on U.S. Federal Government 2001–2013: Threat Assessment Considerations
Mar 1999
Assassination in the United States: An Operational Study of Recent Assassins, Attackers, and Near Lethal Approachers
Photo Gallery
NTAC Chief Dr. Lina Alathari and Supervisory Social Science Research Specialist Steven Driscoll present the findings from NTAC’s "Mass Attacks in Public Spaces - 2018" report in Washington, D.C.
NTAC Chief Dr. Lina Alathari and Supervisory Social Science Research Specialist Steven Driscoll present the findings from NTAC’s "Protecting America’s Schools" report in Chicago, Illinois, in 2019.
NTAC Chief Dr. Lina Alathari participates in a press conference for NTAC’s "Mass Attacks in Public Spaces - 2018" report in Washington, D.C.
Director James T. Murray participates in a press conference for NTAC’s "Protecting America’s Schools" report at Secret Service Headquarters in Washington, D.C., in 2019.
Deputy Director Leon Newsome introduces NTAC’s "Protecting America’s Schools" report in Chicago in 2019.
Supervisory Social Science Research Specialist Steven Driscoll presents NTAC's research, "Mass Attacks in Public Spaces - 2019," at a press conference in Washington, D.C., Aug. 6, 2020.
NTAC Chief Dr. Lina Alathari announces the team's latest research, "Mass Attacks in Public Spaces - 2019," at a press conference in Washington, D.C., Aug. 6, 2020.
NTAC Supervisors Steven Driscoll and Diana Drysdale accept the 2019 DHS Secretary’s Award for Excellence on behalf of the NTAC team.
Deputy Director Leon Newsome introduces NTAC’s “Protecting America’s Schools” report in Chicago in 2019.
Return to top of page
About Us
Leadership
History
150+ Years of History
The Evolution of Our Badges
Wall of Honor
Protection
Protecting Leaders
Safeguarding Places
Securing Events
National Threat Assessment Center
Investigations
Counterfeit Investigations
Financial Investigations
Cyber Investigations
Forensic Expertise
Most Wanted Fugitives
Seeking Information
Avoid Scams
Mission Support
Newsroom
Behind the Shades
Press Releases
Speeches and Testimony
Videos
Social Media
Careers
Application Tracker
Secret Service Police
SPEAR
Special Agent
Special Agent Talent & Achievement Recruitment
Special Operations Division - Counter Assault Team
Technical Law Enforcement
Administrative, Professional and Technical
Student Employment
Veterans
Career events
Employee & Family Support
Contact
Field Offices