I used to work at a manned TV transmitter site, right in the middle of a farmer's paddock. In the part which was used by us, we had the fairly substantial Tx buildings, & a 400ft plus guyed lattice mast, with guys extending out into the farm proper. One warm, drowsy day, having worked through a list of routine maintenance items, I was just about to take a break, when I heard a loud engine sound. I knew the farmer had recently bought a spectacular new tractor, & assumed it was him coming to "show it off " to us. I put the kettle on, & waited awhile, but he didn't show, so I strolled out the front. There, happily weaving his way between the guy wires, was a cropduster! As I watched, this "intrepid aviator" encroached closer & closer to the mast. Just as I was doing a mental inventory of which was the most solid part of the building in which to grovel in terror, he lost interest in his game & flew away to another part of the farm. Telling this story to a colleague, he told me of several "near misses" some years before, when the mast was first being commissioned. The aviation authorities had been notified of the existence of the new mast, but apparently it hadn't trickled through to the Air Force, who ran a fairly substanial flight training centre a few hundred miles away. He was up the mast one day, when a two seater De Havilland Vampire appeared out of nowhere, practicing low flying. At the last moment, the Pilot noticed the mast, banked sharply & flew under one of the outer guy wires.----below where my colleague was! Not a view of an aircraft you often get, or want to get! On another occasion another RAAF plane, this time a hulking great DC4, came galumphing over the horizon, then flared off sharply to avoid the top of the mast. The Air Force really seemed to love low flying! Totally off topic, but this farmer was an interesting character. Amongst other eccentricities, he ran "free range" pigs. From a distance, I had thought they were really funny looking sheep!