To respond effectively in the event of a public health emergency, careful analysis of preparedness plans is essential. This note describes a linear programming model of the Center for Disease Control Strategic National Stockpile (SNS) supply chain for distributing medical supplies under emergency conditions. The purpose of the model is to evaluate the effects that a specified collection of planned resource availabilities would have on the efficacy of the distribution network. This efficacy is measured in terms of the number of patient -hours waited during the emergency response time horizon. The model's constraints describe the physical system, including the relationships between the SNS, the regional distribution warehouse, and the medical supply distribution clinics. In the following note all model constraints and variables are described in detail, and AMPL code implementing the model is given.