This is a little irrelevant, but I've been researching extra-
terrestrial coverups. I had no doubt governments were keeping their
little secrets, but not to this extent. Of course it's almost
impossible to tell if this is real stuff, but with combined ex-
government official documentaries and footage it seems very probable
this could have happened, but by no means with terrestrial technology
or craft.

http://youtube.com/watch?v=ORGezFZ7S2o

If you pay close attention to the video you can clearly see the
extraordinary acrobatics the craft is undertaking between the film
blackouts.