When I make a waypoint map it always defaults to Land as the last action as opposed to RTH. I learned that can have unintended consequences. I was perfecting a waypoint route I had been working on for several days and flown a half a dozen times, but one day I accidentally touched my pinkie on the screen and it added a new last waypoint about a mile away from my home. Up till that point my mission had started and ended at my home but when I flew on this particular day, when my drone returned at what I thought was the end of the mission, it abruptly turned and took off away from my home. By the time I realized what was going on, the drone was already out of contact with my controller and I was unable to cancel the mission and do a RTH. Luckily for me, I drove to where the last waypoint was on the map and located the drone. It was still a bit dicey as where it had landed was on the top of a palm tree about 20 feet in the air. Because of the graciousness of a nearby neighbor I was able to get the drone down from the tree undamaged and now I always make sure RTH is the final action unless I intend otherwise.