Short clip of a radio-controlled drone-style bot hovering at about 190 feet altitude then quickly descending. Seen at the Mini Maker Faire in Tyler, Texas (US) on March 23,2013.
<a href="//commons.wikimedia.org/wiki/User:Buddpaul" title="User:Buddpaul">Paul M. Budd</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>