Facing alien race has a common approach with facing a stranger. Do not be pretentious familiar!

If you begin to find the alien by using common sense, then you have just narrowed your searching area.

There is no UFO and also there is no alien,
at least not in common mind nor reference.

You, me and everyone else might be able to think and say one simple word, 'alien'. Just curious, when that word crossed in our minds and said, we are all refer to the same object.

The 'element of surprise' of the alien invasion will cause a certain event in human side which is called the 'moment of shocking'. This will be an advantage point to the invaders, a weakness point in human side. This kind of situation, can only be overcome if and only if, some protocols of counter-invasion have been made before.

For the sake of popularity, vote, and reelection, most governments remain secretive to the public about the truth of alien contact with mankind. For them, it is better like that than being thrown from the throne.