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Leadership

Last Updated: | Site Page

Julie Brewer

On January 11, 2025, Ms. Julie Brewer assumed the role of Acting Under Secretary for the Department of Homeland Security (DHS), Science and Technology Directorate (S&T). As the scientific, technical and engineering core of expertise for the Department, S&T is a direct science adviser to the Homeland Security Secretary, DHS Components, and the nation’s first responders. S&T is responsible for identifying operational gaps, conceptualizing art-of-the-possible solutions, and delivering operational results that improve the security and resilience of the nation. Recently, Ms. Brewer served as the Deputy Under Secretary of S&T, overseeing the organizational needs of the $1 billion, 1500-person Directorate. 

Last Updated: | Blog

Celebrating the Scientific Contributions of Women and Girls

Today, we mark the 6th Annual International Day of Women and Girls in Science, but we honor them and reap the benefits of their work every day of the year.

Last Updated: | Publication

Letter from DHS Office of General Counsel to GAO on DHS Succession

Acting Secretary Chad F. Wolf and Senior Official Performing the Duties of Deputy Secretary (SOPDDS) Kenneth T. Cuccinelli II are lawfully performing their current roles at DHS under the Homeland Security Act of 2002.

Last Updated: | Publication

Resumes of Political Appointees

Resumes for individuals who entered into a position at DHS as “political appointees” and career employees who have been detailed into a leadership office or component front office since March 23, 2017.

Last Updated: | Testimony

Written testimony TSA Administrator for a House Committee on Oversight and Government Reform hearing titled “Examining Management Practices and Misconduct at TSA, Part II”

Transportation Security Administration (TSA) Administrator Peter Neffenger addresses his vision for the TSA and its role in securing transportation systems through the deployment of a dedicated, well trained, professional, and effective counterterrorism workforce.

Last Updated: | Site Page

Office of the Executive Secretary

The ESEC provides all direct support to the Secretary and Deputy Secretary, as well as related support to leadership and management across the Department.

Last Updated: | Site Page

Leadership

S&T's senior leaders. 

Last Updated: | Publication

DHS Privacy Office Leadership and Organization

View the organizational chart for the Office of the Chief Privacy Officer.

Last Updated: | Publication

S&T Organizational Chart

S&T’s mission is to enable effective, efficient, and secure operations across all homeland security missions by applying scientific, engineering, analytic, and innovative approaches to deliver timely solutions and support departmental acquisitions.

Last Updated: | Site Page

Organization

The list of all Operational and Support Components that make up the Department along with our organization chart and the list of senior leadership.