Motivation – Share information; make better decisions. Research approach – Explore the use of XML code to document and transmit characteristics of decisions. Findings/Design – The paper recommends a CDEP. Research limitations/Implications – This work implies that we need an open-standard body similar to OMG in the object-oriented world. This would help to make decisions and their explanations more interoperable across a wide variety of organizations. Originality/value – The value of this work will be realized in military and other types of command and intelligence centers where decision tracking serves training and analysis purposes to preserve lessons learned. Take-away message – The authors welcome comments on this proposed decision-exchange protocol and suggestions and want to collaborate with others on this effort, which supports a global-interoperability test bed.