Achieving mission objectives in complex and increasingly adversarial networks is difficult even under the best of circumstances. Currently, there are few tools for reasoning about how to react to rapid changes in a given network's environmental state; that is, we do not know how to cope with adversarial actions in hostile environments. In this paper, we consider a preliminary operational model that combines the states, detection outputs, and agility maneuvers associated with a cyber-operation in hostile networks. The goal is positing the development of an operational model to aid in the successful completion of mission objectives with a minimal maneuver cost. We present a host remediation case study that explores the efficacy of the proposed model in aiding operation completion.