When descending, will the Spark detect a very thin object underneath such as an electrical utility power wire? The reason I ask is that I was test flying my Spark at the side of my house today and when descending, I accidentally hit an overhead wire. I had the prop guards on, the Spark bounced and wobbled a bit but recovered nicely and made a safe landing. I suspect that without the guards on, one or more of the props would have been damaged and the drone would have crashed. Anyway, is Obstacle Detection designed to avoid wires or is it only for larger, bulkier objects? If it is designed to avoid a skinny object like a wire, what did I do wrong? TIA, Bill in Seattle