Deputy Director, Office of Safeguards and Security Assessments

Thomas “Clay” Messer has over 20 years of experience leading and managing in high consequence environments, including nuclear weapon/component protection.  Mr. Messer serves as the Deputy Director of the Office of Safeguards and Security Assessments, within the U.S. Department of Energy’s (DOE) Office of Enterprise Assessments (EA).  In this role, Mr. Messer leads teams of subject matter experts in assessing the performance of protection programs at DOE and National Nuclear Security Administration (NNSA) facilities possessing significant quantities of special nuclear material and other high-value assets.

Clay Messer - Deputy Director

Some of his significant accomplishments include establishing the DOE Limited-Notice Performance Test Program and serving as Program Manager for the Department’s Composite Adversary Team.  Mr. Messer has also served as the Acting Director of EA’s Office of Risk Analysis and Program Evaluation.
Mr. Messer began his career with DOE at NNSA’s Pantex Plant where he served in numerous positions including protective force shift commander; managing the analytical basis program for safeguards and security with responsibilities for the site security plan, vulnerability analyses, and change control processes; and as the safeguards and security interface with the nuclear safety, nuclear explosive safety, explosive safety, and worker safety and health organizations.  Mr. Messer also served as the security director for the plant-wide emergency response organization and emergency management.  Prior to his work at Pantex, he served as a supervisor with the Texas Department of Criminal Justice and in the U.S. Marine Corps.

Mr. Messer holds a Bachelor of Science degree in Business Management and a Master of Business Administration degree from Wayland Baptist University.  He has also completed the U.S. Office of Personnel Management’s Leadership Development Program in Executive Management.