Abstract
This paper describes a suite of simulation models for Port-of-Entry (POE) systems, dubbed POESS (POE Simulation System). POESS was developed with the support of the U.S. Department of Homeland Security (DHS) for use primarily by the U.S. Customs and Border Protection (CBP) agency. POESS aims to assist CBP in POE design and operational decision making. A POESS simulation model of the Bridge of the Americas (BOTA) POE, located at El Paso, Texas, is described as an example.