These sightings are for real

How can the "authorities" continue to deny their presence? there have been literally millions of sightings reported from all over the world for centuries. We don't make this stuff up, it is not our imagination or a hoax. It is unfortunately a part of everyday life. The sad thing is that there is nothing we can do about it if they threaten us. They throw billions of dollars into exploring outer space and worm holes instead of creating a defense against a possible invasion. We are like sitting ducks.