Holography, a technique for obtaining three Dimensional images, involves an interference pattern between two sets of single wavelength light waves. A single laser beam is split into two parts, one to illuminate the object, the second part (called the reference beam) is reflected by a mirror.

The two beams meet forming an interference pattern, which is developed to form the hologram. This hologram can be used to render a 3D image of the original object on to film or digital media. According to a comprehensive report by Canadian investigative journalist, Serge Monast, entitled Project Blue Beam.

This holographic technology when utilized in conjunction with hi-technology mind control weapons using the effects of radio frequency waves upon the brain and is capable of projecting an image in the sky causing collective thought to convince people they are seeing UFOs possibly created by aliens.

A Pennsylvania witness at Allentown reports watching a "dark brown or black rectangle with a white border around it" that appeared to be floating above a residential development before quickly disappearing from view, according to April 7, 2012, testimony from the Mutual UFO Network (MUFON) witness reporting database.

The witness was visiting parents in the same neighborhood and was heading home when the object was first seen.

"I was going down a street and the street looks up a hill and the open sky pops through the trees and houses," the witness stated. "In front of my car in the sky just above the trees was a dark brown/black rectangle with a white border around it. It looked like a floating box. I couldn't imagine how a box would be floating in the air. I looked for lights and there were none that I saw."

The witness described the object.

"There was no noise at all. It moved horizontally straight, slowly, and silently."

Internet site references:

http://www.examiner.com/ufo-in-national/silent-rectangle-ufo-over-allentown-disappears-quickly

http://www.ufos.co.in/node.php?vid=669539161