The net impact of drug enforcement is often underestimated, and a containment hypothesis may provide a more precise framework for assessment. The “balloon effect” is an often used but rather dismissive representation of the effects of drug enforcement. This involves a hydraulic moving model and an impermeable illicit drug. The balloon effect is an often used but rather dismissive representation of the effects of drug enforcement. This involves a hydraulic movement model and an impermeable illicit drug trade. Military involvement in law enforcement. Dale Stephens. Captain in the Royal Australian Navy. Abstract. Policing is not a task usually assigned to military forces, at least in domestic legal contexts. Conversely, maintaining or restoring security in dysfunctional or “post-conflict” areas of operations is a role. In this article, I would like to introduce tactical principles as a coherent security system for agents. This system can be applied at many different levels of law enforcement and in many different situations. These principles are: • Coverage. • Threat Indices Threat assessment. • Time-distance ratio.