Technological advances have led to the prevalence of small unmanned aerial systems (sUAS) which has proven to be a security concern for fixed facilities to include prisons, airports, and forward operating bases. This study explores if agent-based simulation modeling can serve as a useful tool for developing counter unmanned aerial system (C-UAS) parameters for a fixed facility. The relationship between threat speed and a hypothetical C-UAS is explored in an AnyLogic model designed to represent a prison and general sUAS smuggling threats that prisons have experienced in recent years. The data suggests there is a critical threat sUAS speed in which C-UAS failures occur at a much higher frequency and that the relationship is non-linear
