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Our Staff

Terry Maughon – Founder and President (1987)

Terry graduated from Moody Bible Institute in 1978. He served as Director of Student Ministries at Grace Fellowship Church in Johnson City, TN for 16 years. During that time, he conducted summer camps using rented facilities and eventually formed Doe River Gorge Ministries, where he has served as president since 1994. Terry and his wife, Karen, and have three children: Kara (married to Mark Page), Danielle, and Michael, and wife Sara (Owen).

Vernon familyRyan Vernon – Program Director (1995)
Jennifer Vernon – Discipleship Coordinator (2022)

Ryan graduated from East Tennessee State University with a BS in Continuing Education (Outdoor Recreation & Safety). During the development years of Doe River Gorge he volunteered as activity instructor and facilitator. His certifications include: Lifeguard Instructor, Wilderness First Aid Instructor, CPR/First Aid Instructor, USSF Soccer Coach & Referee, and formerly Swift Water Rescue Instructor. He and Jennifer have two sons, Riley & Reece. He enjoys traveling, hiking, skiing, and watching sons play soccer & run cross-ountry.

Jennifer graduated from East Tennessee State University with a BSW in Social Work and a Masters in Recreation/emphasis Therapeutic Recreation from UT Knoxville.  She and her family attend Redstone Community Church.  From the development years of Doe River Gorge and the growth of the ministry up till now, Jennifer has volunteered as an activity instructor and facilitator, led Bible Studies, trained summer staff in high adventure, planned and coordinated retreats at the ministry, and started a college gathering “The Fellowship”.  For the last 25 years she has worked in the mental health field in various positions.  In the last 5 years, she has been working with InterVarsity Christian Fellowship.  She and husband Ryan have two sons, Riley & Reece and a dog Patches. She enjoys traveling, hiking, skiing, beach walks, and watching sons play soccer & run cross-country. webpage

Clif and Hannah Jensen – Visual Media/Website (1996)

After graduating from Cedarville College (1972) and Moody Aviation (1976), Clif and his wife Hannah served as missionaries in Amazonas, Brazil with the Association of Baptists for World Evangelism. They have five children and sixteen grandchildren. Clif produces promotional videos and is also the webmaster.  Hannah assists Clif with shooting Adventure Quest videos and also helps in the office.  webpagenewsletter

Mark Milbourne – Technical Services (1997)

Mark graduated from Wheaton College in 1987 with a degree in Computer Science/Math. He worked for DuPont as a Systems Analyst until 1995.  Mark now manages the computer and A/V systems and railroad operations. His wife Nancy also served on staff 1996-2000.   They have two children, Jon (2001) and Kate (2003). webpage

David Legge – Maintenance Supervisor (2004)

David graduated with degree in Business Admin. from Marshall University in 1991. He later completed bible courses through Moody Bible Institute. David and wife Samantha moved to East Tennessee in 2001 to train with Moody Aviation. They have two daughters, Micah and Hannah, and two sons, Joseph and Jesse.  webpage

Matt Kellerman – Maintenance (2012)

Matt graduated from Moody Bible Institute in 2002 and served with Carter County Sheriff’s Department. He and wife Tracy have seven children. webpage

Scott Freemon – Business Manager (2016)

Scott served as summer staff at Doe River Gorge from 2010-2015. After graduating from the University of Tennessee with a degree in Computer Science in 2013, he assisted in the development of the one-year internship program at DRG. His transition to business manager came over a period of time being mentored by previous DRG business manager, David Jensen.

Michael Maughon – Outdoor Education (2017)

Michael worked at Le Reve in Las Vegas before coming to Doe River to develop the Outdoor Education program. From his youth he has had a passion for all things outdoors. Michael has a well-developed skill in nature photography which he uses to document his discoveries and observations. Michael is married to Sara (Owen), who was an Exponential intern (2018-19). They have one son, Spiers.

Jessica OstranderJessica Ostrander – Equestrian Director/Maintenance Assistant (2017)

Jessica trained in Parelli Natural Horsemanship methods in 2009. In 2010 she served at Doe River Gorge as Summer Staff and then on full-time staff 2013-15.  She returned to her home in WI for 2 years and returned to Doe River Gorge in 2017. webpage

Karen Sizemore – Food Service Director (2018)

Karen served on the housekeeping staff beginning in 2007, and in 2018 moved into the food service staff.

Chuck Lyle – Chief Development Officer (2018)

Chuck is a graduate of the University of Tennessee and Cumberland School of Law. He practiced law in Tampa, FL for 13 years before becoming a real estate developer. He and his son have enjoyed Father/Son Challenges and Adventure Quest at Doe River Gorge. He joined the DRG Board of Directors in 2015. Chuck and his wife Angie have four children: Connor, Catherine, Chase, and Christin and reside in Knoxville, TN.

Beth Sherrer – Guest Services Director (2021)

Beth is a native of Johnson City, TN.  She is a graduate of Bob Jones University in 2002 with a Master’s degree in counseling.  During college, she worked three summers at a Christian camp in NC.  Most recently she was a children’s home director in Tanzania for 12 years. Beth and her husband John live in Hampton, TN.

Jacob Thomas

Jacob Thomas – Assistant Program Director (2021)

Jacob is from Elizabethton, TN and began his connection with Doe River Gorge when he attended Father-Son retreats. He then served as summer staff 2017-2020.

Joel Hurst photo

Joel Hurst – Program Assistant (2021)

Charis Williamson

Charis Williamson – Recruitment and Marketing (2022)

Charis has a long-time history with Doe River Gorge. Starting out as a Junior Adventure Quest camper, she has worked her way through Adventure Quest programs including all three leadership programs.  She served as a summer camp counselor for three summers, and most recently completed the 9-month Exponential Gap Year program from 2021-2022.