A hitherto unseen species of Juvenile Black Helicopter has been found in a New Zealand basement with a shocking new morphological development: IT HAS SIX INSECTOID LEGS!
With the ability to crawl through tight areas normally impassable to spinning rotors, this species of Black Helicopter poses an even greater threat. The common paranoid technique of hanging a jungle of rotor-entangling bits of string from the ceiling will provide no protection from them crawling into your hideout as you sleep and injecting you with BH seed-crystals. If you haven't immediately covered your floors with loops of outward-sticky duct tape upon seeing the above video, I'd suggest you do so ASAP.
(UPDATE: video went missing, can't find copy. Originally via hackaday, with more info.)