Distributed Interactive Simulation (DIS) is an IEEE standard for conducting real-time platform-level wargaming across multiple host computers and is used worldwide, especially by military organizations but also by other agencies such as those involved in space exploration and medicine. History The standard was developed over a series of "DIS Workshops" at the Interactive Networked Simulation for Training symposium, held by the University of Central Florida's Institute for Simulation and Training (IST). The standard itself is very closely patterned after the original SIMNET distributed interactive simulation protocol, developed by Bolt, Beranek and Newman (BBN) for Defense Advanced Research Project Agency (DARPA) in the early through late 1980s. BBN introduced the concept of dead reckoning to efficiently transmit the state of battle field entities. In the early 1990s, IST was contracted by the United States Defense Advanced Research Project Agency to undertake research in support of the US Army Simulator Network (SimNet) program. Funding and research interest for DIS standards development decreased following the proposal and promulgation of its successor, the High Level Architecture (simulation) (HLA) in 1996. HLA was produced by the merger of the DIS protocol with the Aggregate Level Simulation Protocol (ALSP) designed by MITRE. There was a NATO standardisation agreement (STANAG 4482, Standardised Information Technology Protocols for Distributed Interactive Simulation (DIS), adopted in 1995) on DIS for modelling and simulation interoperability. This was retired in favour of HLA in 1998 and officially cancelled in 2010 by the NATO Standardization Agency (NSA). The DIS family of standards DIS is defined under IEEE Standard 1278: IEEE 1278-1993 - Standard for Distributed Interactive Simulation - Application protocols IEEE 1278.1-1995 - Standard for Distributed Interactive Simulation - Application protocols IEEE 1278.1-1995 - Standard for Distributed Interactive Simulation - Application protocols (Corrections) IEEE 1278.1A-1998 - Standard for Distributed Interactive Simulation - Application protocols Errata (May 1998) IEEE 1278.1-2012 - Standard for Distributed Interactive Simulation - Application protocols IEEE-1278.2-1995 - Standard for Distributed Interactive Simulation - Communication Services and Profiles IEEE 1278.3-1996 - Recommended Practice for Distributed Interactive Simulation - Exercise Management and Feedback IEEE 1278.4-1997 - Recommended Practice for Distributed Interactive - Verification Validation & Accreditation IEEE P1278.5-XXXX - Fidelity Description Requirements (never published) In addition to the IEEE standards, the Simulation Interoperability Standards Organization (SISO) maintains and publishes an "enumerations and bit encoded fields" document yearly. This document is referenced by the IEEE standards and used by DIS, TENA and HLA federations.