Mando and Mary currently serve as Staff and Teachers of New Tribes School of Missions. They have four grown up children: Leah, Brenda, Samuel, and Nena. They were missionaries to the Ibaloi tribe of Benguet, Philippines for more than 2 decades, and then moved to NTSM in 1984. They spent five years in the training program, and had their furlough in 1989. After their furlough, they went back to Ibaloi tribe in 1990. After their ministry there, they went back again to NTSM in 2002 and since then, have been with NTSM working as Staff and Teachers. Though both of them have already reached their retirement age, they are still actively involved in equipping missionary candidates for missions work.