Not saying it wasn't a ufo because with all the planetary data we have collected no one will ever be able to say there isn't intelligent life out there to me. Statistically we are very small in this universe. However, there are things like hypersonic weapons and vessels. As well as a possibility of breaking the speed of light if we could find a way to create enough negative zero energy. And maybe we have. They would never tell us what they really have anyway. Just a thought.
http://www.cnn.com/2014/06/12/tech/innovation/warp-speed-spaceship/
http://www.cnn.com/2014/06/12/tech/innovation/warp-speed-spaceship/