Today I purchased Litchi since for filming purposes, it appears to be vastly superior to DJI Go. Now I'm slightly worried what to do when something goes wrong. For instance, I plan a mission, start my P4 and all of a sudden realize that one tree its flying towards is a lot higher than I thought it was. Assuming I'm still in controller range, is there a really fast and reliable way to get control back to manual? Thank you.