Royal Netherlands Air Force Operational Test and Evaluation squadron, operates 2 F-35A  This unit, which is apparently not a test squadron at all, operates Boeing C-32Bs in discrete missions for the United States Department of State's Foreign Emergency Support Team. The 919 SOW, located about five miles (8 kilometers) south of Crestview and from Eglin main at Eglin AFB Auxiliary Field No. 3 (Duke Field) and is the only special operations wing in the Air Force Reserve Command (AFRC). In wartime or a contingency, the 919 SOW reports to Air Force Special Operations Command (AFSOC) at Hurlburt Field, Florida, its gaining major command. The Air Force Operational Test and Evaluation Center stood up Detachment 2 at Eglin to provide realistic operational testing for new and modified weapon systems. The Naval School of Explosive Ordnance Disposal (NAVSCOLEOD) is a Navy-managed command, jointly staffed by Army, Navy, Air Force, and Marine Corps personnel. NAVSCOLEOD opened its new consolidated training facility in April 1999. Directorate of the Joint Staff, JDAT conducts field analysis of C2 information systems and procedures producing decision-quality data to improve Joint C2 integration and interoperability. Eglin is also one of the few military air bases in the U.S. to have scheduled passenger airline service as the Destin–Fort Walton Beach Airport (VPS) is co-located on the base property. Flying and notable non-flying units based at Eglin Air Force Base. Units marked GSU are Geographically Separate Units, which although based at Eglin, are subordinate to a parent unit based at another location. For units permanently based at Eglin's auxiliary airfields, see the airfield's respective page (Biancur Field, Duke Field and Hurlburt Field). Air Force Materiel Command (AFMC)  Air Education and Training Command (AETC)  Air Combat Command (ACC)  Air Force Reserve Command (AFRC)  Air Force Space Command (AFSC)  Direct Reporting Units (DRU)  Special Operations Command (Airborne) (USASOC)  United States Fleet Forces Command (USFF)  Joint Chiefs of Staff (JCS)         ** Discontinued 8 March 1946. Not related to later AAF Proving Ground Command  A number of auxiliary fields were constructed on the Eglin reservation during World War II, many of which are still in service in various roles, either in support of flight operations or special test activities.