Staffing models for covert counterterrorism agencies

This article presents staffing models for covert counterterrorism agencies such as the New York City Police Department, the US Federal Bureau of Investigation, Britain's Security Service or the Israeli Shin Bet. The models ask how many good guys are needed to catch the bad guys, and how should agents be deployed? Building upon the terror queue model of the detection and interdiction of terror plots by undercover agents, the staffing models developed respond to objectives such as: prevent a specified fraction of terror attacks, maximize the benefits-minus-costs of preventing attacks, staff in expectation that smart terrorists will attack with a rate that optimizes their outcomes, and allocate a fixed number of agents across groups to equalize detection rates, or prevent as many attacks as possible, or prevent as many attack casualties as possible. Numerical examples based on published data describing counterterrorism operations in the United States and Israel are provided throughout.