In today's rapidly-evolving airport security field, a multitude of challenges face airports and airlines, and one of the most widely discussed and highly problematic is the state of hold baggage-screening solutions. Looking backover the past two years at the US Transportation Security Administration's (TSA) efforts to provide sufficient checked baggage security screening equipment to allow for 100% hold baggage screening, it is difficult to discern a 'model' implementation for efficiency and cost-effectiveness. In 2002, directed by the US Congress, TSA conducted a wide-scale depl