I bought a dji4 advanced last month while I am vacationing. My wife and I are on our way from AZ back to Alaska, we're teachers. Thought it would be nice to take vids and pics with a drone while heading home this summer. This is my first drone ever and so far I am very happy with it. Yesterday we stopped in the redwood forest in northern california and I had the bright idea to fly through the redwoods. First, no GPS signal was available. My first attempt at taking off saw the drone go about 50 ft straight up and no higher. So I landed, turned "something "on the app and took off again, much higher this time but almost uncontrollable. I flew the drone through a redwood tree and thought it was done for, the drone sounded like a weedwhacker! Luckily the drone was unharmed and I was able to get the drone back on the ground. The blades are in tact and I had to use water to wash all the green leaves and other stuff off,,,great video!