We hiked ten hours the first day then four hours the next day, and a week later called the chopper to pick us up and was back at our bush houses in less than ten minutes. Yes, I vote for the plane as the number one tool for saving time to reach the unreached with the gospel. No matter how trained your missionary might be, one must get him to the work quickly for him to be effective reaching the unreached in hard to get to places around the world. No cost is too great if we can only finish the task given to us to do for the glory of God.