SUMMARY: 4 adults video tape object over area 51 in Nevada. Video shown on 2 different episodes of "Unsolved Mysteries".

In 1992, 4 of us were able to capture on video some of the maneuvers of the "Area 51" object.  It shows the craft hovering, then moving down the ridge line until it disappears.  
Also on video, the morning sequence which showed the craft pulsate and become brighter.  This is the segment used on Unsolved Mysteries.  Once it became totally dark it was nearly impossible to capture all of the maneuvers on video.  This thing could go from horizon to horizon in just seconds.  It would fly just like a meteor, stop on a dime, then go in a completely different direction.  We all saw the craft become brighter,almost as if it were gaining energy, then shoot across the sky.  After doing several maneuvers, the light would become dim, then go out.  The other 3 said,"it just disappeared", but I was looking thru binoculars and saw what appeared to be an egg shape craft with the slightest pearlescent green glow. I watchedit go out of range.  The craft would be gone for approx. 45 minutes, then at the exact same time, all 4 of us heared a high pitch frequency "inside" our heads.  Then instantly, the object would appear.  I saw thru the binos what appeared to be some sort of docking with a larger ship.  There were several smaller ships throughout the evening which appeared to me as if they were helicopters observing from a distance. 
I am a private pilot and a former Marine.  I've spent alot of time around planes and helo's.  This main craft was definitely not one of those.  
Finally, what seemed to bother all of us the most was toward dawn, the craft came to a stop, and almost appeared to mimic a star.  It stayed in rotation with the rest of the stars 'till dawn.