House building for Tribal Church Planting location and Support Centers. General NTM Center related maintenance and upkeep. Install, maintain, troubleshoot and repair solar electric systems. Install, maintain, troubleshoot and repair generators. Household appliance repair, i.e. washing machines, refrigerators, stoves, etc. Install maintain, troubleshoot and repair water systems, and plumbing. Troubleshoot, repair and maintain small engines. Research and development of useful new technologies that will better equip missionaries for life in remote tribal locations.