High Quality Content by WIKIPEDIA articles! Interceptor Body Armor (IBA) is the United States Army`s primary bulletproof vest. The Interceptor design replaced the older fragmentation protective Personnel Armor System for Ground Troops (PASGT) body armor system, introduced in the early 1980s. Materials for the Interceptor vest were developed by DARPA in the 1990s, and a contract for production was awarded to DHB Industries` Point Blank Body Armor, Inc., by the U.S. Army Soldier Systems Center.