The 506th Air Expeditionary Group (506 AEG) is a provisional United States Air Force unit. The group is assigned to the United States Air Forces Central 332d Air Expeditionary Wing, stationed at Joint Base Balad, Iraq. The 506 AEG secures the base, conducts safe flight operations and supports the nation builders in support of Operation Iraqi Freedom and other US Air Forces Central and US Central Command contingency plans. As a provisional unit, the 506 AEG may be activated or inactivated at any time.