And this is more than a theoretical risk... https://www.washingtonpost.com/news/powerpost/wp/2016/04/23/the-runaway-surveillance-blimp-that-captivated-the-nati

And this is more than a theoretical risk... https://www.washingtonpost.com/news/powerpost/wp/2016/04/23/the-runaway-surveillance-blimp-that-captivated-the-nation-is-likely-grounded-for-good/ https://www.washingtonpost.com/news/powerpost/wp/2016/04/23/...