Bob and his wife, Deb, came to Christ as teenagers.
Bob attended Wheaton College for two years, later graduating from Purdue University in 1973 with a degree in civil engineering. Bob and Deb were involved in The Navigators Collegiate ministry at Purdue.
After their marriage in 1972, they joined the Navigator ministry among married students there. The Reussers joined staff in 1976, beginning a ministry among married students at Indiana University. Bob led the staff training center for The Navigators Community Ministries in Lafayette, Indiana, for six years.
Bob and Deb lived in Lansing, Michigan, from 1987 to 2015, with Bob filling various Navigator roles including executive projects director for the Metro Mission. Bob officially assumed his Nav Encore role in May 2014. After two years in Indiana, Bob and Deb returned to make their home in Lansing, Michigan, from which Bob leads the Nav Encore Mission.