Walk from village to village with a local informant (for language, culture, survival, etc) and do Bible storying, play the Jesus Film, do basic proclamation, and identify 'persons of peace' for later contact by the long term missionaries. This will be a rugged assignment, so you will need to be physically fit, able to hike and camp for a few weeks at a time (i.e., away from the team's base but in cell phone contact and easy motorcycle or truck range for support, oversight, and fellowship)