Dr. George M. Thomas

President and Chief Executive Officer


George M. Thomas is President and CEO of Adult & Teen Challenge of Texas. George began as a volunteer in New England in 2003 – eventually serving the Connecticut program in administrative, teaching, and counseling capacities for 2 years. During this time, he was licensed as an AG minister and helped birth an inner-city, “Teen Challenge church” near the New Haven campus. In 2006, George became the business administrator for Teen Challenge USA in Springfield, MO. He earned his Doctor of Ministry Degree from the Assemblies of God Theological Seminary. For his dissertation, George authored the Teen Challenge USA Best Practices Manual. With a passion to reach the 1.5 million drug and alcohol addicts in his home state of Texas, George joined Adult & Teen Challenge of Texas in June 2009. George’s spiritual gifts are teaching and administration and he finds the following traits as essential to working at Teen Challenge: dependence upon God, commitment to students, and ability to operate in a team environment.

George earned his bachelor of science, majoring in Biology and Christianity, from Houston Baptist University. In 1999, he earned his Masters in Business Administration at University of Houston, concentrating in accounting and subsequently working as an accountant for various Fortune 500 companies in Houston prior to joining Teen Challenge. He and his wife Dolly, along with three daughters and 1 son, live in San Antonio.





Greg Ambroson

Azle Men’s Director

Greg is the Director of our 38 bed men’s program in Azle. Over the last 20 years, Greg has led ministries involved in missions, worship, prayer, and curriculum-writing. Greg served on the pastoral team of Fairmeadows Church over the last 5 years, while writing curriculum for Sampson Ministry. As a pastor, Greg referred numerous individuals to Teen Challenge over the years until the Lord called him to serve full-time at the Azle campus in March 2016.

Greg holds a Bachelor of Christian Studies from Christ for the Nations and a Bachelor of Arts in Culinary Arts from the European Institute of Culinary Arts. Greg is married, has two sons and a daughter, and two grandchildren.


Maynard Sweigard

Bastrop Adolescent Boys Director




Jonathan Mitchell

Brenham Men’s Director

Jonathan Mitchell-BW

I was born in New Iberia, Louisiana. My father was in the military, so from birth throughout my young adolescence years my family moved several times. We returned to our home state of Louisiana after my father retired from the Navy in the mid 70’s. I graduated high school, and attended McNeese State University on a football scholarship, where I majored in business administration. I played two years of professional football and later attended the State of Louisiana Law Enforcement Academy. I received a state commission and worked as a narcotics agent for several years before I resigned. I entered Adult & Teen Challenge of Texas in February of 2000. On February 28, 2000, I received Christ as my Lord and Savior.  Several days later I was baptized in the Holy Spirit, at which time I knew that my life had been changed forever.  I completed the program in March of 2001 and completed an internship a year later.  I then went to work for Cardell Cabinetry and became a production manager and worked there until 2007.  In 2009 I returned to Teen Challenge of Texas as a general staff member in the admissions department and over the past five years I have worked at several different department head positions at the San Antonio men’s campus while receiving several training certificates through Teen Challenge. In September of 2014 I transferred to the Brenham men’s campus as the program coordinator to assist in the birthing of our 3rd phase-re-entry program. On January 1st of 2015 I become the campus Director of the Brenham program. I am currently in the process of acquiring my ministerial credentials through Global University.

My lovely wife, Mary and I met some 13 years ago at 1st Assembly of God in San Antonio, Texas, and confirmed our love for one another with the exchanging of wedding vows before God and man on April 11, 2009. We have one son, three daughters, and one grandson. We consider it a privilege and an honor to serve our Lord and to be instruments used by Him in the process of transforming the lives of men that were without Hope.


Julie Johnston

Houston Women’s Director


Julie has been involved with Adult & Teen Challenge of Texas since 2005.  She and her husband Eddie came here after serving four years at Teen Challenge of the Permian Basin. Beginning their ministry as a married couple in 1990, they spent five years at Winnsboro Teen Challenge for adolescent males. Desiring a change, they took the Pastorate at Crane First Assembly for four years before moving to Big Spring First Assembly as associate youth pastors. During those five and a half years, Teen Challenge choirs visited those churches and the testimonies drew them back to their ‘first love’ of ministry.

Julie graduated American Commercial College in Lubbock, Texas with an Executive Secretarial Degree and went straight into Master’s Commission at Roaring Springs Camp. Her first desk job was under the direction of Rev. John Murdoch, the former Christian Ed./Youth Director for West Texas District Council of the Assemblies of God office in Lubbock, Texas. She credits her current ‘life in Ministry’ to that opportunity which, she feels, confirmed God’s love for her and His call on her life. Julie and Eddie have one daughter, Rachel, who graduated high school in May 2010.


 Jason Colston                                                                                                                   

Magnolia Men’s Director

Jason Colston is the Director of the Adult & Teen Challenge of Texas – Magnolia Campus, in Magnolia, Texas. Jason grew up in Magnolia attending Living Waters Assembly of God where his father, Michael Colston is the pastor. After Jason graduated high school, he went to Southwestern Assembly of God University in Waxahachie to study Pastoral Ministries. He earned his Bachelor’s Degree in Pastoral Ministries in 2004 and has been in ministry since then as a Youth Pastor and Associate Pastor of Living Waters. Jason was ordained with the Assemblies of God in 2009. He has volunteered at the Adult & Teen Challenge Campus since 2006, and has been heavily involved in ministry to the students. Jason has been a part of the planning and implementation of activities and events for his youth group, as well as assisting his father in leadership of the congregation of Living Waters Assembly of God. During the time he has been licensed and ordained with the Assemblies of God, he has also established a family of his own, including his wife, Cesiah, and his two children Josiah and Jonathan. Together, Jason and Cesiah have been instrumental in helping establish a solid youth and children’s ministry at Living Waters Assembly. They have also been instrumental in helping Jason’s sister pastor a Spanish speaking church under the umbrella of Living Waters, as well as, transition into a full time pastorate Bethel Mission Outreach in Roma, Texas. Together, the two families have planned retreats, mission trips, summer camps, community outreach events and fundraisers to further the Kingdom. Jason’s heart is for soul winning. His family has been a vital part of the Magnolia community for over 38 years, with the same single focus – soul winning.


Floyd A. Miles III

Director of Operations/San Antonio Men’s Director

Floyd Miles

My name is Floyd A. Miles III. I was born and raised in Harlem, New York. My mom died of a heroin overdose at the age of 28. My dad was a junkie for 20 years before being dramatically saved in an instant when he cried out to Jesus at the Teen Challenge center in Brooklyn. I was glad that God had given me my dad back; however, by then I was doing my own thing. Soon my life became ravished by drugs and I found myself living in an abandoned building. Things had gotten really bad for me. I had signed up to go into the Air Force in order to get out of the city but I never made it because my life spiraled out of control. I called my dad and he got me into the Brooklyn Teen Challenge center.

I was still planning to go into the Air Force after I completed TC. However, God had other plans for me. One day while at a crusade I responded to an altar call and a man of God prophesied and literally told me all that I was thinking at that very moment. He told me that God had called me into the ministry (Jer. 29:11).

After completing TC, I went to Bible school (where I met my lovely wife Mary) and seminary. We have been married for 26 years and have 3 children. I also have a daughter and 2 grandchildren who live in South Carolina. In addition to me and my dad, my sister and my first cousin (who I was raised with) are also TC graduates!

I worked at Teen Challenge New England for nearly 20 years. While there, God allowed me to start the first Teen Challenge center in Connecticut and an inner-city Assemblies of God church called New Creation Outreach.

Prior to coming to Texas I was the senior pastor of Victory Christian Center and I worked as a Licensed Addictions Counselor at the Indianapolis Treatment Center.  To God Be The Glory !!!

Debra Duncan

San Antonio Women’s Director

debraI was raised in San Antonio Texas. I attended college at SAC when it was still a Jr College and moved to Austin to finish there.  I majored in Sociology thinking I wanted to be a Juvenile Probation Officer. However  I ended up taking a  different direction. In 1964  Lyndon Johnson declared “The War on Poverty” one result of this was the Head Start program .My Mother was hired as Director of Head Start in San Antonio in 1966 when I was 13 . So every summer I worked as a volunteer helper at the first Head Start in San Antonio, on the East side in an old church basement near the Pioneer Flour Company. This experience pushed me in the direction of private child care and I worked in that field for many years.I had strayed from church at 18 and had never returned until I was in my 40’s, when I was born again. My faith and my Church became the central focus of my life for many years. When faced with the loss of loved ones and the grief that follows such losses, I fell into a deep depression. God seemed distant and unreachable.My son, struggling to deal with grief of losing his daughter began to abuse alcohol and nothing I did seemed to help him.  I was taking prescription opiates in the effort  to find some way to cope with the pain, and fear and feelings of helplessness.  I soon became as addicted as any addict on the street. My son succumbed to his alcohol addiction and died at 31. Six weeks later I came to Teen Challenge. I knew if I had any hope at all it was only be found in my relationship to God. I was broken, hopeless and afraid I would always feel beaten, defeated and worthless. I was not a Mom, not a Grandmother what was left for me? Psalm 68:6 says God sets the lonely in families.And this he did for me. After an internship I I started as staff in Education. I became Education Coordinator and am now privileged to serve as the Director for the San Antonio Women’s Campus. I can see the struggle in families dealing with addiction from both sides. If I can have even the smallest part in helping to prevent the loss of a loved one through addiction then I can know my son’s death was not in vain and that God does work all things to the good of those who love Him.


Corporate Staff

Tony Frazier

Business Manager

tonyTony was born  in Little Rock, Arkansas and has one older sister. He was raised in Germany for most of his childhood  and moved to Austin, Texas in 1980. He worked for First Texas Honda as a Mechanic for 21 years and came to Teen Challenge in August 2003 as a result of 25 years of drug and alcohol abuse and a diagnosis of Bi-Polar disorder, anxiety disorder, Manic depression and PTSD. Tony graduated from Teen Challenge in September 2004 and has worked with the ministry since that time. He has served in many roles: Intake Coordinator, Teaching, Program Coordinator, Office Coordinator but most loved preaching at Chapel, teaching Ultimate Journey and advising students. Tony began working in the Administrative Office in March as the Business Manager and really enjoys his work. He says “I just love the Lord and like working for the ATCOT Ministry and serving others!”

Sarah Baughman

Director of Development


Sarah is the Director of Development for Adult & Teen Challenge of Texas. Sarah and her husband are both graduates of the San Antonio program and have worked with the ministry for over seven years.  Sarah was born in England and moved to Texas with her family at the age of four. She grew up in the Dallas area and enjoyed school, singing, and playing the violin. After graduating high school, Sarah fell into addiction and her family called upon Teen Challenge for help. She successfully completed the program and stayed to participate in the internship program. She was eventually hired on as staff and has worked in every area on the women’s campus in San Antonio.

She is currently a Certified Minister with the South Texas District of the Assemblies of God and hopes to eventually become ordained. Sarah and her husband have two daughters. Sarah’s life is a testament of what the Lord can accomplish and how He uses Adult & Teen Challenge of Texas to make a difference in people’s lives. Truly anything is possible with God!


Kim Cooper

Human Resources Manager


Kim Cooper is the Human Resources manager for Adult & Teen Challenge of Texas. Kim began her journey with Teen Challenge when she was given the opportunity to join the corporate staff in early 2009. During this time, Kim has had the opportunity to give employees and students alike a sense of God’s love and compassion and to show that through Jesus Christ ALL things are possible. When we give our lives to Him openly, He will restore us and help us overcome the addictions of this life.

Kim was born into a Christian home in North Carolina and her faith is founded on the principals of the Pentecostal Holiness Denomination. Kim graduated high school in 1985 and went on to earn her Associates in Business Administration. Kim moved to Texas in 1997 and was blessed with two beautiful daughters in 2000 and 2004.  She recently married Jeffrey Cooper in June 2014.


Tom Moncrief

Office Manager


Tom has been involved with Teen Challenge since coming to the San Antonio campus in June, 2007 as a student. Upon graduation in 2008, he has served continuously as an intern, campus staff, and corporate staff member, while fulfilling the desire God has given him to ‘give back’ to this ministry of recovery, restoration, and reconciliation.

He was born and reared in Tyler and lived in the Houston area from 1980 until 2007. He graduated with a BS degree from the University of Houston and subsequently spent 27 years in construction management. Nothing accomplished, career-wise, was fulfilling the desire that God had placed in his heart to serve in a ministry that was dedicated to the recovery of lives, both spiritual and physical, from issues such as alcohol addiction, drug abuse, and other addictions controlling their lives. Since 2008, while serving at Adult & Teen Challenge of Texas, the Lord has allowed him to participate in ministering to the students on several levels, helping to plan and organize special events, and eventually using the gifts of organization, administration, and encouragement while working in the corporate offices with a group of leaders whose sincere desire is to serve God and facilitate the recovery of the students at Teen Challenge.

Learning to completely depend on God for everything and committing his life to the well being of the students, the ‘desires of his heart’ (Ps 37: 4-5 and Prov 3: 5-6) are being completed in the life of being the servant, as Christ commanded us all to be.


About Us

Adult and Teen Challenge is the faith-based SOLUTION for the drug epidemic. The scope of Adult & Teen Challenge has grown over the years, and now serves adults as well as teenagers. There are over 200 Teen Challenge campuses in the United States, and over 1000 centers world wide in over 80 countries, which provide Christian recovery services to individuals of every age and social background. Typically, these services are long-term residential recovery centers which provide a life-encompassing environment through which the participant is able to change their lifestyle and develop a plan for a future free from addiction.