Sean graduated from the U.S. Naval Academy in 1993 and spent 22 years as a Marine Corps officer, working as a helicopter pilot, strategic planner, and training coordinator at bases including Camp Lejeune and Quantico. After retiring, he joined Deloitte and Touche’s Cyber and Strategic Risk division, where he served federal clients across the Departments of Defense, Transportation, and Commerce. He left Deloitte in 2021 to found Knighthawk Consulting, a leadership development and executive coaching firm based in Strasburg, Virginia.