Harry and Debbie Horne were first appointed workers with the Presbyterian Church (U.S.A.) in 1983.  Their most recent appointment, which began in July 2004, is to the branch of the Universidad Bíblica Latinoamericana (UBL) in Lima, Peru.   Harry teaches Bible and Biblical language courses.

About the UBL in Lima, the Hornes write, "The story of the UBL is the story of the ministries of our students.  We have no resident students. They come from all around Lima.  They come from busy lives, some as pastors and some as lay leaders with secular occupations, but all deeply involved in the church.  We exist to give them a chance to reflect on and inform their ministries with a deepened understanding of God’s Word for us."

Prior to their assignment to the UBL in Lima, the Hornes served from 1994 to 2003 in Guatemala with the Seminario Evangélico Presbiteriano de Guatemala (SEP) and the Central American Evangelical Center for Pastoral Studies (CEDEPCA).

While at the SEP Harry taught a variety of Bible and theology courses and developed curriculum resources for the seminary and outlying centers.  Debbie was the director and a teacher at La Escuelita at SEP, a preschool and kindergarten program that she started.

The Hornes' first appointment as PC(USA) mission workers was from 1983 to 1987, when Harry served as a youth minister and Christian educator in the Grand Cayman islands in the Caribbean. After that term of service, the Hornes returned to the United States, where Harry accepted a call to be the pastor of First Presbyterian Church, Darien, Georgia and Debbie obtained a bachelor's degree and taught first grade.

Born in Denver, Colorado, Harry graduated from Eckerd College in St. Petersburg, Florida, with a bachelor of arts degree in sociology. He later earned his master of divinity degree from Austin Presbyterian Theological Seminary in Texas and his master of theology and doctor of ministry degrees from Columbia Theological Seminary in Decatur, Georgia.

Harry has been pastor of Parkway Presbyterian Church in Panama City, Florida, and at Trinity Presbyterian Church in Jacksonville, Florida, and associate pastor of First Presbyterian Church of Jacksonville, Florida.

A native of Jacksonville, Florida, Deborah worked for Stockton, Whatley, Davin, and Company and the Duval Federal Savings and Loan Association.  She holds a bachelor of science degree in elementary education from Armstrong State College in Savannah, Georgia, with honors.

Harry is a clergy member of Savannah Presbytery, and Debbie is a member of First Presbyterian Church in Darien, Georgia.  Harry and Debbie are the parents of four adult children: Amy, Eddie, Stephen, and Sarah.