Pine Bluff Explosive Destruction System (PBEDS): PBEDS began operations in June 2006 to destroy more than 1,200 recovered chemical warfare munitions at PBA – the largest inventory of recovered chemical warfare materiel in the nation. The system involved three Explosive Destruction System (EDS) units, each set up in a vapor containment structure. The EDS uses cutting charges to explosively access chemical munitions, eliminating their explosive capacity before the chemical agent is neutralized. The PBEDS inventory included 4.2-inch mortars as well as German Traktor rockets, which were captured during World War II. PBEDS operators destroyed the last munition in April 2010, marking the destruction of all non-stockpile materiel declared when the United States entered into the Chemical Weapons Convention (CWC).