I saw an alien today

Today I went to my dad's house and while I was sitting in the car I saw something that looked like a ball that flew from the trees at a high speed towards a lake. The ball was flying in a zigzag manner, and after about 10 seconds it disappeared. I called my friend who was standing next to me and we both saw the same thing. <br><br>And the craziest thing is that I've seen the same ball flying zigzag over the same lake last year when I was going to my dad's house. This ball looked like a drone, but it was flying at a speed that was not normal.