Advances in modeling and simulation technology are rapidly increasing the fidelity of tactical training for aircrews, especially in the electronic warfare (EW) arena. Unfortunately, the tools that allow instructors to monitor and manipulate these complex training environments have failed to evolve accordingly. Sixteen experienced instructors and engineers were interviewed to identify problems with the Instructor Operator Station (IOS) used to control simulation-based training environments at the 58^th Special Operations Wing (58 SOW). Thirty-four problem areas were identified, and then rank ordered. Three areas emerged as most problematic: lack of sufficient information about the mission environment (terrain, cultural features, planned waypoints, etc.); excessive levels of effort required to modify the EW environment (e.g., up to 25 steps to manipulate a threat); and a "Spaceball" that is difficult to operate and unreliable. Instructors reported that training effectiveness can be enhanced substantially by manipulating the simulated EW environment. However, the procedures were so complex and time-consuming that it is unrealistic to make these changes while instructing students. To improve instructor control and situational awareness, several IOS display enhancements were examined on a "proof of concept" basis: (1) a digitized JOG chart was added, (2) the entire display was re-hosted using a X-windows and Motif format, and (3) the touch-screen and "Spaceball" interfaces were replaced with a user-friendly Trackball. Termed the Enhanced-IOS (E-IOS), these changes were implemented in a stand-alone workstation emulation and subjected to controlled testing using twelve instructors. The E-IOS led to significantly faster threat manipulations, lower difficulty ratings by instructors, and more accurate range and bearing estimates between ownship and other objects of interest. On the basis of these results, it is anticipated the E-IOS changes will be implemented on 58 SOW simulators, at which time impacts on training will be assessed.