Lewis and Rebecca Roberts did their DTS in Ghana at the Tema Base. They both served as DTS staff beginning December of 1990. In December 2002, they and their three children left to the USA for missionary training programs at the YWAM Tyler Base in Texas. They both did the Teachers For the Nations school. Lewis also did School of the Bible while Rebecca was in School of Writing. After their training, they both taught at YWAM Tyler (Daysprings) Christian Heritage School. In July of 2007 they returned to Ghana.

Lewis and Rebecca Roberts have officially been given permission to start a YWAM base in Kumasi, the Regional Capital of the Ashanti Region of Ghana. They began the first DTS in July of 2011.