The Centers for Disease Control and Prevention (CDC) established the Strategic National Stockpile (SNS) with a focus on procuring and managing medical countermeasures (MCM) designed to address chemical, biological, radiological, and nuclear events and attacks by weapons of mass destruction. The stockpile is a repository of antibiotics, chemical antidotes, antitoxins, vaccines, antiviral drugs, and other medical materiel organized to respond to a spectrum of public health threats. Over time, the mission of the SNS has informally evolved to address other large-scale catastrophes, such as hurricanes or outbreaks of pandemic disease, and rare acute events, such as earthquakes or terror attacks. When disaster strikes, states can request deployment of SNS assets to augment resources available to state, local, tribal, or territorial public health agencies. CDC works with federal, state, and local health officials to identify and address their specific needs and, according to the stated mission of the SNS, ensure that the right resources reach the right place at the right time.On August 28, 2017, the National Academies of Sciences, Engineering, and Medicine convened a workshop to explore the current state of the global medical supply chain as it relates to SNS assets, and the role of communications in mitigating supply chain risks and in enhancing the resilience of MCM distribution efforts. This publication summarizes the presentations and discussions from the workshop.