This UFO & Aliens fankunst contains
anime, comic, manga, cartoon, comic buch, karikatur, and comics.
There might also be
zeichen, plakat, text, tafel, schilder, and poster.
Putting the argument of UFO existence aside, it should come as no surprise that NASA lies to the public. Their excuse is to protect secret projects from competing countries many many believe the intense classification has a deeper purpose.