UFO Sighting in Fremont, California on July 25th 1989 – hovered at treetop then moved and turned at 60%angle then hovered above us one of three for 9 minutes then the one returned to the other two and departed looked away twice during hovering

camping at freemont state park standing at the back of my van deciding what to have for diner one of six of us noticed three ufos hovering at treetop and told the other five of us. we looked for a couple of minutes then one of them moved silently and turned at a 60%angle and stoped in front of us at 90ft above 50ft in front of us. it was disk shaped with a small half bubble on the bottom pulsating colored lights.it was grey in color with a raised parabola on top 50ft in diameter. the bottom of the craft was blurry like it was emminating field the top was crisp.it hovered for about nine minutes I looked away twice for about 20 seconds.it then moved in a straight line then turned at a 60% angle traveled to the other two (its movement was in the shape of a triangle {60%,60%,60%} silently. then the three accelerated instantly to a high rate of speed to the south.