Big Black Delta Mystery Solved?

Hundreds of sightings of enormous arrowhead-shaped aircraft that have been logged since the 80s just might have been solved. According to a new report by the National Institute for Discovery Science, the craft — referred to as Big Black Deltas, or BBDs — are massive black airships on the order of 600 feet long, 300 feet wide, and 40 feet tall, weighing on the order of 100 tons and capable of carrying huge loads over long distances — via Slashdot