The Combat Aviation Brigade, 28th Infantry Division is a heavy aviation unit of the Pennsylvania Army National Guard. The Combat Aviation Brigade (CAB) is one of five brigades of the 28th Infantry Division. It provides provides aviation assets for both federal and state active duty missions. The aviators of the CAB fly the AH-64D Apache, UH-60 Black Hawk and CH-47 Chinook helicopters. The CAB headquarters is at Fort Indiantown Gap, located north of Harrisburg, Pennsylvania. The brigade is composed of the following additional units: