The biggest concern I have personally is with respect to security and safety, whether it's at an airport, in someone's backyard, or peeking into someone's window with respect to privacy, or with respect to security, flying one of these things into a stadium with 100,000 people in it, equipped with things they shouldn't be equipped with.
I'll throw this question out to all four of you. What is the ultimate solution well into the future to prevent those situations from happening?