College of Social and Behavioral Sciences
Dr. Sean Grier is a contributing faculty member for Walden University in the School of Criminal Justice with the College of Social and Behavioral Sciences. Dr. Grier has been teaching collegiate level courses in a variety of formats since 2010.
Dr. Grier earned his PhD in Criminal Justice from Nova Southeastern University. Additionally, Dr. Grier earned his MS in Criminal Justice from the University of Cincinnati, as well as a MDiv and MA from Liberty Theological Seminary. Dr. Grier completed his undergraduate studies at Liberty University. Dr. Grier’s research interests include biosocial criminology, gun policy issues, and faith-based correctional programming.
Dr. Grier has an extensive professional background, including over twenty-five years of professional law enforcement experience. Dr. Grier began his career on active duty with the U.S. Army Military Police, and later transitioned to a position as a uniformed Police Officer in the Washington, D.C. area. Dr. Grier then accepted a position as a Special Agent with the Defense Security Service, headquartered out of the Pentagon, where he witnessed the horrific attacks on 9/11. Dr. Grier is currently employed as a Supervisory Federal Air Marshal with the Department of Homeland Security.