Andrew D. Wittman, Ph.D., is a United States Marine Corps infantry combat veteran, a former police officer, and federal agent. As a Special Agent for the U.S. Capitol Police, Wittman led the security detail for Nancy Pelosi and has personally protected Hillary Clinton, King Abdullah of Jordan, Benjamin Netanyahu of Israel, Sir Elton John, as well as Fortune 20 CEOs. As a security contractor for the State Department, he taught high-threat diplomatic security to former Navy SEALS, Marines, Rangers, and Special Forces.

Wittman is the founder of the Mental Toughness Training Center, a leadership consultancy specializing in peak performance, team dynamics, resolving conflict in the workplace. He holds a Ph.D. in Theological Studies, is a guest lecturer at Clemson University.