Col. Brian J. McCullagh is the Commander of the 624th Regional Support Group, headquartered at Joint Base Pearl Harbor–Hickam, Hawaii. The 624th RSG delivers mission essential capability to combatant commanders through combat readiness, quality management, peacetime deployment, and execution of six geographically separated units in the Pacific area of responsibility. The Group is the largest Air Force Reserve presence in the Pacific, providing nearly 700 combat-ready Airmen who specialize in aerial port, aeromedical support, and civil engineering operations for worldwide employment.