Gregory Koller serves as the Deputy Director of Support Services at GEMA/HS. In this position, he oversees all GEMA/HS support functions that make emergency response possible. This includes Finance, Information Technology, and the Logistics Departments of the agency.

In his prior role as Logistics Chief, Koller was responsible for ensuring all logistics and resource management functions were fully operational before emergencies occurred. Notably, he spearheaded a $1.8 million HAZMIT grant that provided 18 emergency generators to enhance the state’s power restoration capabilities in the aftermath of Hurricane Helene.

Koller is a retired Colonel in the United States Army with four active tours in Georgia and four combat deployments to Iraq and Afghanistan. His distinguished military career included roles as a logistician and commander, culminating as the Logistics Operations Officer for the 3rd Expeditionary Sustainment Command in Kandahar, Afghanistan, where he supported over 68,000 U.S. and coalition forces.

He holds a bachelor’s degree from the University of South Alabama and is a graduate of multiple U.S. Army leadership programs, including the Command and General Staff College. Following his military retirement, Koller worked in the private sector with Walmart and Penske Logistics before joining GEMA/HS as a Logistics Program Manager. Since then, he has supported the state through numerous emergencies, including severe winter storms, tornado outbreaks, the COVID-19 pandemic, and multiple hurricanes.

Koller and his wife, Lisa, have been married for 34 years and have three children, Brooke, Megan, and Ryan. In his free time, he enjoys gardening, ballroom dancing, and traveling.