Started using drones for hard to reach areas after hurricane Sandy. I had an inspection to do on a church steeple in New Jersey. I tried using a camera with a good zoom lens but could just not get what I needed. I purchased a drone, practiced with it a couple of hours and got the photos I needed. Have been using a drone ever since.
I have the Inspire One vers. 2 with the FLIR Zemuse XT which is a thermal camera. This sensor works great for search and rescue, inspecting flat roofs for leaks, damage, and trapped moisture. Thermal cameras are used to locate overheating industrial equipment and finding sick livestock in a herd. Certified Level 1 UAS Thermographer.