The Institute of Electrical and Electronics Engineers 1278.1 Distributed Interactive Simulation (DIS) Standard’s Electromagnetic Emission Protocol Data Unit contains a Jamming Technique field and the associated jamming techniques are enumerated in SISO-REF-010. There are currently 134 hierarchical jamming techniques listed with no information provided other than their name and location in the hierarchy. This is not enough information to ensure common understanding among Electronic Warfare (EW) subject matter experts and simulation developers to support interoperability, fair fight, and good training. This paper describes an ongoing effort to provide definitions for these techniques, address issues with the hierarchy, and provide additional jamming interaction data that will support higher fidelity simulation. This effort has two phases. The first phase is to provide concise and unambiguous definitions for all valid jamming techniques. To document jamming technique definitions in an open environment, we cite unclassified and exportable academic and research sources. The jamming technique definitions allow jammer and radar modelers to have a common understanding of the techniques which facilitates fair fight distributed EW between manned simulations, constructive forces, and live assets participating in a training scenario. The jamming technique definitions are proposed for a new annex of the DIS Standard. The second phase will redesign the hierarchy to properly support interoperability between systems with different levels of fidelity. One of the main reasons for the proposed redesign is that the current hierarchy contains a problematic mixture of jamming system architectures and techniques. This phase will also propose additional attributes that will allow jammer and radar simulations to more efficiently represent more detailed EW interactions. The additional attributes help define the quality of the jamming waveform and will allow higher fidelity simulation of the effects on the victim radar. All proposed changes will be vetted with the simulation community.