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Gregory R. Wellen

Assistant Administrator for Transportation Threat Assessment and Credentialing

Photo of Gregory R. Wellen, Assistant Administrator for Transportation Threat Assessment and Credentialing

Gregory Wellen was selected in April 2008 as TSA's Assistant Administrator for Transportation Threat Assessment and Credentialing (TTAC). He responsible for the design, development and implementation of risk-based approaches, systems and programs for vetting and credentialing operations at TSA and DHS.

The TTAC office performs security threat assessments for millions of individuals engaged in or with access to various aspects of the U.S. transportation system. As part of this mission, TTAC works closely with intelligence, law enforcement and other appropriate agencies to mitigate the threat posed by an individual who may be identified as a threat to transportation or national security.

In the early part of his career at the National Security Agency (NSA), Wellen worked as a computer scientist, electrical engineer, project leader and program manager in the Research and Engineering Directorate. During the last 15 years he has served in various leadership and operations positions at NSA headquarters, overseas, and in the intelligence community.

His overseas experience includes assignments around the world. Other experience includes assignments to the NSA extended enterprise, U.S. military groups in foreign locations, CIA, and the former Information Operations Technology Center. Most recently, Wellen served as the Director of the NSA's Information Warfare Support Center from 2005 to April of 2008. The Center is NSA's focal point for information operations support to the U.S. military.

Wellen was commissioned in the U.S. Army in 1983 and served as an executive officer of a Special Forces Operational Detachment – A Team from 1983 to 1986. He permanently retired from the service in 1986.

Wellen received his Bachelor of Science in computer science, his Master of Science in computer engineering and his Master of Business Administration from Loyola College in Baltimore. In 2003 he received his Master of Science in national security strategy from the National War College at the National Defense University. He continues to guest lecture at the National War College on the topic of information operations.