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Kathryn Coulter Mitchell

Kathryn Coulter Mitchell was appointed the Senior Official Performing the Duties of the Under Secretary for Science and Technology (S&T) on May 5, 2021. As the science advisor to the Homeland Security Secretary, Ms. Coulter Mitchell heads the research, development, innovation and testing and evaluation activities in support of the Department of Homeland Security’s (DHS) operational Components and first responders across the nation.

William N. Bryan

William N. Bryan assumed the role of Under Secretary (Acting) for the Department of Homeland Security (DHS) Science and Technology Directorate on May 30, 2017. As the science and technology advisor to the DHS Secretary, Mr. Bryan leads the research, development, innovation and testing and evaluation activities in support of DHS operational components and first responders across the nation. Prior to joining S&T, Mr. Bryan was the President of ValueBridge International’s Energy Group in Reston, Virginia.

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.

Acting Secretary McAleenan Statement on the Designation of Administrator Pekoske to Serve as Senior Official Performing the Duties of the Deputy Secretary

On April 11, Acting Secretary of Homeland Security Kevin K. McAleenan designated David P. Pekoske, the Transportation Security Administration (TSA) Administrator, senior official performing the duties of the Department of Homeland Security (DHS) Deputy Secretary. Patricia Cogswell, TSA’s Acting Deputy Administrator, will oversee day-to-day operations at TSA and continue to focus on TSA’s mission and priorities.

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