The Police Executive Research Forum (PERF) was commissioned by U.S. Customs and Border Protection (CBP) to conduct a review of the Use of Force by CBP officers and agents. This review included all CBP use of deadly force events from January 2010 through October 2012 and CBP use of force policies, equipment, tactics, and training. Sources of information were government-furnished information, equipment and materials and CBP policy documents.PERF reviewed Customs and Border Protection Use of Force Policies and 67 case files related to Customs and Border Protection agents' use of deadly force. Case files were sorted in general categories to include: firearm response to subjects armed with firearms; firearm response to rocks thrown on land; firearm response to rocks thrown on water; firearms use against vehicles; and other firearm cases.