Derick Zwerneman is the Director and co-founder of Serve Source, a nonprofit equipping churches and communities to respond to crises with greater coordination and collaboration. A second-generation firefighter and 28-year veteran of the Austin Fire Department, Derick also served over nine years as Outreach Pastor at Celebration Church under Pastors Joe and Lori Champion. Co-founder of the Disaster Response Relational Network (DRRN), Derick focused his efforts to create and launch Serve Source in March 2022 to support faith leaders and response organizations nationally and internationally. He and his wife, April, live in Round Rock, Texas, and have three adult children.

Sweeton Macule is an aspiring educator and researcher from Chongoene, Mozambique. He holds a degree in Geography Teaching with shift qualifications from Save University and is passionate about geography and technology mapping through his work with Serve Source.

Sweeton is the first person in generations of the Macule family to attend and complete university. Today, he teaches English to young people in his community and leads a church youth group for ages 13–19. His love for reading and writing inspires him to send daily biblical devotions to more than 100 people.

Sweeton’s work is driven by a desire to connect people to Christ and serve others through faith, knowledge, and collaboration.

Dennis Harris is the Outreach Director and staff pastor at Church of the Highlands in Birmingham, Alabama. With over 40 years of ministry experience, he leads Disaster Response efforts locally and globally, bringing practical help and hope to communities in crisis. Dennis

also co-founded the Disaster Response Relational Network and Serve Source, fostering collaboration among churches nationwide. His passion for outreach has shaped city-wide initiatives, international missions, and impactful church partnerships. Dennis and his wife have been married for 37 years, sharing a lifelong commitment to faith, service, and transformation.

Michael Gardner is a seasoned disaster response leader with over a decade of experience coordinating relief efforts alongside nonprofits, government agencies, and faith-based organizations. He currently leads technology and mapping initiatives for Serve Source, helping streamline collaboration and communication for disaster response networks. Michael brings deep expertise in emergency management, data integration, and community resilience. North of Austin, Michael and his wife serve together at their church — he as an elder and she as a vocalist. They enjoy raising their young daughter in a life of faith and service. Michael’s passions include technology, discipleship, preparedness, and creating/building with raw materials like wood and metal.