IR1 - Incontri close of the first type
Simple warning, without any test material. For example, the sighting of lights or objects in the sky that can not be attributed to man.
IR2 - Incontri close of the second kindSighting of which were collected evidence showing the passage of a UFO or extraterrestrial life: impressions, radiation and circles in the camps are the most obvious examples.
IR3 - Incontri close of the third kindMore than one person is a witness to one or more unexplained phenomena, indicating a degree of reliability.
IR4 - Incontri close of the fourth kindThe so-called cases of abduction or kidnapping for purposes unknown part of UFO.
IR5 - Incontri close of the fifth typeThere are reports of direct communication between humans and extra-terrestrial creatures.
IR6 - Incontri close of the sixth typeInvolves the death of the person kidnapped.
IR7 - Incontri close of the seventh typeIndicates a sexual relationship between humans and extra-terrestrial creatures such as the case Villas Boas .
AN ARTICLE ON A VIDEO OF NASA THAT INCORPORATES A UFO (CLICK TO ENLARGE)