 Today, over 177,000 personnel are trained annually at the Gap.Fort Indiantown Gap is a staging area for the 56th Stryker Brigade Combat Team of the 28th Infantry Division, the first National Guard Stryker brigade in the U.S. Army.Since the September 11th attacks, the Gap has served as a mobilization center for troops supporting operations in Bosnia and Kosovo, as well as operations Enduring Freedom and Iraqi Freedom.