My first experience with RTH!! Was flying along and hit 3700 feet and boom no signal, no video no RTH nothing. Then RTH button starts flashing some time goes by and the drone flashes via video. Sweat is dripping off me like a prostitute in church!! No signal still on screen no video!! Another flash and sweat now dripping off me onto the ground. Seconds later another flash of video and weak signal. Finally after what seemed like hours and I am sure it was minutes full signal and video!! Holy sheep **** batman this **** actually works. I take control of my bird and fly the baby home !! WOOOHOOO DJI RULES!!!