Mary Anne and Jack Voelkel are longtime missionaries with Latin America Mission (LAM). For twenty years they pioneered a university ministry in Colombia that is a member of the International Fellowship of Evangelical Students (IFES). For ten years they taught as professors at Biblical Seminary in Medellín. Jack is Urbana's missionary-in-residence and serves as the voice of "Ask Jack," Urbana.org's most popular column. The Voelkels make their home in Tucson, Arizona, and return to Colombia yearly for teaching assignments.