Previous failures in effective, large-scale disaster response (e.g., Hurricane Katrina) can often be traced to failures in effective coordination. As evidenced in after action reports, however, assessments of coordination performance are still largely anecdotal in nature. Network analysis was seen as a possible means to develop quantitative metrics for coordination assessment. In this article, two techniques are proposed. First, Borgatti's technique for quantifying network fragmentation was selected to measure the extent to which coordinating entities play a role in establishing efficient communications. Second, Girvan and Newman's technique for community sub-group identification was utilized to identify potential breakdowns in information transfer. Both techniques were successfully implemented in a case study analysis of the Top Officials 4 exercise. The techniques appear promising for providing additional insights into coordination performance, identifying exercise artificialities, and allowing meta-analysis of coordination performance (e.g., over time, across regions, for different event scales). #DisasterandEmergencyManagementEvaluation #InternationalandCross-CulturalEval #2011Conference