DTRA 2010-2013, "Mathematical Approaches to WMD Defense and Vulnerability Assessments on Dynamic Networks", co-PI with C. Smith and P. Pardalos.

NSF Career Award 2010-2015, "Optimization Models and Approximation Algorithms for Network Vulnerability and Adaptability", Principle Investigator.

DTRA 2009-2013, "C-WMD: Models, Complexity, and Algorithms in Complex Dynamic Evolving Networks", Principle Investigator.

NSF 2008-2010, "A New Approach for Identifying DoS Attackers Based on Group Testing Techniques", Principle Investigator.