The high-bay lab is a highly flexible and dynamic test bed. The large indoor space can be used to carry out complex tests year-round in temperature- and environmentally-controlled spaces. The testing layout is completely customizable and adaptable for a wide variety of test activities. Prior testing has included detailed handheld detector testing, and realistic backpack testing using a range of radiation sources located nearby. Source-control systems include programmable conveyor belts, pop-up stationary systems, and wireless data readout support systems. This space can also be used to simulate conveyor and walkthrough RPM systems that are typically deployed at express consignment courier facilities (FedEx, for example), international mail, and preclearance sites.