UFO Sighting in Syracuse, New York on June 18th 1968 – 2 to 8 objects silently flying various manuvers,all directions ,light woud go out when they rolled ,then appear again.1i

I went outside to get some air.looking up at the stars isaw one moving slowly to the north,then another moving south directly at the other.just before they met ,they both made a right angle turn together flying parallel to each other to the east until I could no longer see them.I knew that they were not airplanes .they were silent and had no visual running lights.one by one, 6 more objects like the first two, came into view from all directions. all were doing manuvers together,moving left right,up down and rolling,where the light would disappear then reappear.this went on for about 30 minutes .all the while with not a sound.the first 2 joined the others coming back on the same plane they left on.after a while,maybe twenty minutes or so ,they all left in diferent directions ,one by one.but not all at ..most of the action was almost overhead.I knew what I saw were UFOs because of how they moved silently with no sound and right angle turns.i was overjoyed ,I have ,in the past ,viewed UFOs one at a time.