The Department of Defense Data & Analysis Center for Software has a webinar titled Cost Estimation of Agile Projects: Agile Estimating Challanges. Take a look and listen to see and hear how agile is deployed in the US Department of Defense software intensive systems.
In the domain and context of DoD systems, the processes needed are how to deploy Agile in FAR compliant contracts for software systems that are bounded by schedule, cost, and technical performance measurement processes.