Started when my son left a new flying machine called a Quad (quadcopter) with me. You see, I mentioned to him that I had seen a video "somewhere" that showed quads amazingly flying through hula hoops and around obstacles very quickly. He later ran into a guy that used one for doing AP work concerning insurance adjusting claims for real estate. He bought one, flew it doing AP (aerial photography). And after visiting left it with me, unbeknownst to me at the time. Well if you look at my learning video crashes, I really got into it, and more to come... I guess...