The Engineering Research Development Center (ERDC) Construction Engineering Research Laboratory has developed a range design risk evaluation tool for live-fire ranges to assist installations with the identification and evaluation of environmental risks to range sustainment, as well as the selection of mitigation strategies that can reduce identified risk. As an internet application within Fort Future, the Range Design Risk Evaluation Tool (RDRET) allows the evaluation of environmental impacts and other factors that may constrain the construction and operation of ranges, and is a key component in the process of planning ranges which includes NEPA and master planning functions. RDRET considers the construction and operational requirements of the range e.g. size, targets, ammunition, movement, night operations as well as its activities that may affect resources or be affected by encroachment at one or more proposed site locations. Likely impacts and an evaluation of their risk potential are presented in a matrix of risk factors against range construction and operation activities.