ArduPlane, APM2.6 and Mission Planner come together to make an awesome feature called “Follow Me” where the ground station sends the airplane it’s GPS location and the airplane will go to that location, even follow it as it moves!
I tested it today and it performed perfectly. This will be a valuable feature during the USA trip where I’ll be able to use it if we have to suddenly change course or request the airplane return to us quickly.