In mid October of 2018 I traveled to Albuquerque, NM for cell tower inspection training. There were about 5 of us in the training program. Amazed at the meticulous detail that we were trained to capture!

The DJI Phantom 4 Pro or Mavic 2 Pro lends itself well to do these types of inspection capturing. They are capable of 20 mp still photographs and slow orbits around the towers.