- - Currently raising awareness for Prayer and Donations to support Cuban pastors, leaders, and projects of evangelism, church planting, discipleship, and leadership training. See our Facebook: Jack D Walker and Cu7 We are Volunteers to CUBA; equipping, encouraging, and empowering pastors and house church leaders through training and materials. After 30 years with Mission Aviation Fellowship, 13 years Leadership Ministries Worldwide, 5 years Amazing Grace International ...we are privileged to serve 8 years now in Cuba under TITUS International of Chattanooga, TN.