I've got a survival game I've developed that has a couple bad-guy ships that are supposed to make their way into the center of gameplay several hours after the scenario starts. Each has a preset GPS coordinate locked in (different coordinates several kilometers apart), with precision mode and anti-collision set, and the speed of the two remote control set to 25 m/s and 35 m/s, respectively, so they don't arrive at the same time. Both ships are away from each other when they start. During testing, sometimes one or both of the ships just stop partway to their respective GPS points, and sometimes they both show up as expected. So, that said, I have two questions: 1. Do I need to keep the GPS point saved to the player's GPS list so the ships don't lose it? I'd sure like to make them go away so the player doesn't know why they're there. 2. Just what in tarnation is going on here? (There's a word nobody uses anymore!) Why are one or both of my ships stopping. Any ideas?