Aaron S. Williams has extensive experience in the public, private, and nonprofit sectors, including posts as USAID mission director for South Africa, vice president of the International Youth Foundation, executive vice president of RTI International, and director of the US Peace Corps (2009–2012). Taylor A. Jack is a program manager in the East and Southern Africa Division of Chemonics International, an international development consulting firm. She served as a Peace Corps volunteer in Senegal. Jennifer M. Brinkerhoff is professor of public administration, international affairs, and international business at George Washington University.