Visitations. The certainty of Alien activity

Many believe we are not alone in the universe, that somewhere out ther is an intelligent life other than our own. But for every believer there are many who scoff at the sundry sightings of alien spaceships, unexplained extraterrestrial happenings and unearthly sensations. For the ufological events that can be explained away as a trick of the light, a confused mind or a delibarate fake, there are occassions where the credentials of the viewer, the evidence on the ground and the lasting impact of the experiences felt have stood the test of time and scientific evaluation. Alien activity is not a figment of the imagination of television scriptwriters and film moguls...