Roger Heuser is professor of Leadership Studies at Vanguard University. He is also a consultant and trainer in nonprofits, has co-authored several texts on leadership in religious organizations. and holds a Ph.D. from New York University. Gayle and Roger regularly host spiritual life retreats at their home, and for mission leaders in Europe, Asia, and Central America. Gayle Heuser is an opera singer and senior chaplain at Silverado Hospice. An ordained Assemblies of God minister, Gayle holds two Masters degrees, in leadership studies and music performance. She serves as spiritual director and supervisor at the Emmaus Center in Orange, CA.