Trends indicate, and projections suggest, that the future focus of training system design is modularization, reusability, standardization, cost reduction and team or multiple cockpit training. Several programs are in progress which deal directly with these issues. The Modular Simulator Design Program, a tri-service program administered by the United States Air Force, deals with the modularization and standardization of a single weapons system trainer. The Universal Threat Simulation System Program, administered by the United States Wavy, is concentrating on the standardization and reusability of the threat and electronic warfare environment. Project 2851, administered by the United States Air Force, has the goal of standardizing radar and visual databases. In the team training environment, the Distributed Interactive Simulation program, administered by the United States Army, is attempting to provide a standard method of networking multiple training devices to allow for a cost effective team training environment. How these programs interact with each other is crucial to obtaining the goals of standardization, modularization, reusability and the eventual cost reduction of training devices. This paper provides an objective look at the interaction of these programs from a technical perspective, suggestions are presented for possible modification to these standards to allow for greater compatibility.