Meet the Team

George K Otis Jr_Fotor

George Otis, Jr.

Founder and Chairman

George Otis, Jr. is the founder and lead visionary of The Sentinel Group, a Seattle-based Christian research, media, and training agency dedicated to helping revival-hungry communities discover the pathway to societal transformation.
Best known as the producer of the award-winning Transformations documentaries — a series that has been viewed by an estimated 200 million people in 175 nations. Mr. Otis has also authored six books, and is a frequent speaker at international conferences and symposia.
Mr. Otis is also the chief architect of The Journey to Transformation, a thorough revival preparation and maintenance process, and serves as the current chairman of the International Fellowship of Transformation Partners.
In years past, Mr. Otis has served in leadership capacities with Youth With A Mission, the Lausanne Committee for World Evangelization, and the AD 2000 & Beyond Movement. He has also been engaged as an advisor to The Call, Aglow International, and the ASK Prayer Network.
Mr. Otis has traveled to more than 110 nations, and presently lives in Lynnwood, Washington.


Dawie Spangenberg (2)_Fotor

Dawie Spangenberg

President and CEO

After serving in the South African National Defence Force for nearly 10 years, Dawie started his own Security Group of Companies in 1989. The highlight of this company’s success was obtaining the contract for security services during the 1995 Rugby World Cup and the 1996 African Cup of Nations (Soccer) after which he was voted South African Junior Businessman of the Year by the Johannesburg Afrikaans Chamber of Commerce in 1994.
From 1997 he was involved in the structuring and development of various other businesses.
In February 2002 GOD spoke to him and he dedicated his life to a Prayer movement which later became the Global Day of Prayer. He served as International Coordinator of GDOP till 2009 when 220 nations of the earth took part in this Day of Prayer and Repentance.
In 2008 he bought the rights for Southern Africa in a Weighbridge Company and is currently acting as the CEO for CWCSA. He is also dedicating much time and effort to The Sentinel Group as President and CEO. His dream is to see the vision of Sentinel and the IFTP reach every corner of the earth for God’s Glory.


Isebel Spangenberg (3)_Fotor

Isebel Spangenberg

Communications Director

Isebel Spangenberg is the International Coordinator of the Global Day of Prayer and founder of the Global Prayer Resource Network. Isebel and her husband Dawie have served together in this ministry since 2002. Together they have witnessed God’s miracle of taking the Global Day of Prayer from one stadium event in Cape Town to every nation across the earth!
Isebel’s passion is to communicate, build relationships and network in the Body of Christ. She has a particular passion for the persecuted Church and unreached people groups.


Carol Saia_Fotor

Carol Saia

Senior Researcher
Administrator and PA to George Otis, Jr.

Carol enjoys telling the stories of transformation, through writing articles and also on the phone. She proofreads, reviews incoming reports, and does research to support the website & helps wherever needed.

After ministering in India & Afghanistan, Carol met Mike in Germany & they were married in Amsterdam. They taught in YWAM schools in a number of countries. She now counts it a privilege to be part of the Sentinel Group ministry.


Daron Otis_Fotor

Daron Otis

Media Director

Daron serves in the media department as a videographer and editor, in addition to working in graphic design. He is currently working on several new and exciting media projects with The Sentinel Group. He has had the privilege of traveling to several nations with his dad.



Rick Torrison_Fotor

Rick Torrison

Rick Torrison is a husband of 23 years and a father of two living in Pearland Texas. He has been a pastor for almost 20 years serving in the greater Houston area. Rick received his Masters of Divinity from Asbury Theological Seminary.  He pastored for five years in the Methodist church before planting a nondenominational church as well as the Pearland House of Prayer. In 2010 Rick founded Revival Rivers a servant ministry to the Body of Christ with a focus on equipping, empowering and releasing the Church into Awakening and Transforming Revival. Rick continues to serve ministries like Somebody Cares America/international, the Sentinel Group, Houston Prays and the International Fellowship of Transformation Partners. In October of 2012 Rick was invited to join the staff of Intercessors for America as their National Director of Mobilization and Transformation, with a focus on the implementation of the principles of Transforming Revival through the Journey to Transformation.


Dr Dion Forster

Dion Forster_Fotor

Senior Curriculum Developer JTT

He holds a doctorate in theology and science (Artificial Intelligence, Neuroscience, and African Theology) and have published numerous books. His work involves serving Churches, Church leaders, Businesses and Business leaders in effectively establishing God's Kingdom of grace, mercy, and love. 

He was previously the Dean of the Seminary of the Methodist Church of Southern Africa, John Wesley College Kilnerton.  Over the years he has taught Systematic Theology, Ethics, New Testament and Greek at various academic institutions and Universities. He served as a lecturer in Systematic Theology and Ethics at the University of South Africa, and in the Department of New Testament at the University of Pretoria. 

He currently teaches Systematic Theology and Ethics in the Faculty of Theology at Stellenbosch University – teaching both undergraduate courses and supervising Masters and PhD students.


Skip Krige 2_Fotor

Skip Krige

Fire Tour Coordinator

Skip Krige is based in Cape Town, South Africa where he provides tourism services for mainly international Christian mission and church teams, volunteers, student groups and private tours. He was the tourism service provider at the Lausanne Congress and the Global Day of Prayer Conference both in Cape Town in 2010. He has twenty years of experience as lecturer in Human Geography at a South African university and five years as a facilitator of a city transformation process. He is married to Barbara since 1980 and has one daughter and two sons all loving and serving the Lord.


Field Team:

Benjamin Muti_Fotor

Ben Mutti

Benjamin Mutti has been involved with a wide array of issues concerning public policy in his hometown of Mansfield, Ohio. His activities involve proposing legislation at the local level to protect families from social ills, and equipping citizens to be good stewards of their communities.

Just recently Ben was a recipient of the 2010 Rosa Parks Citizen Activist Award presented by the Cincinnati based group "Citizens for Community Values," for Ohioans who work and live to uphold family values.

Ben’s work with pastors across denominational lines has provided valuable insight on clergy attitudes towards social issues. His pastor surveys and op-ed articles allow him to perform the duties of a media liaison for Christendom in north central Ohio. His goal of promoting persevering prayer and strategic partnerships has been quite evident through the coordination of several corporate assemblies, the annual National Day of Prayer observance, and various other clergy press conferences.

While working for county government, at heart Ben is a researcher and observer of contemporary transformational revival. Ben now serves The Sentinel Group in a support staff capacity. In short, Ben adheres to the words of the wise sage Ben Franklin who once said, "He who shall introduce into public affairs the principles of primitive Christianity will change the face of the world."


Steve Loopstra_Fotor

Steve Loopstra

While Executive Director of Prayer Transformation Ministries in Minneapolis, Steve co-authored the Prayer Transformation Guides. Steve moved to Washington and worked on staff with Sentinel, traveling throughout the U.S. with premieres of An Appalachian Dawn, and serving as an instructor and administrator in the Journey to Transformation course.

In Sep. 2011, Steve's wife, Marilou, passed away. Since researching & writing the story of Algodão de Jandaíra in the book, When God Transforms the Desert, Steve has moved to Brazil, where he continues to teach and preach on prayer and revival in churches and conferences.