Multiple witnesses; multiple types of craft; subsequent sightings after this event.

First craft looked like meteor; it ejected 2 sphere shaped craft, orange. all vanished from site within 60 seconds. Two spheres then appeared to the west of us and floated directly over head at app. 500 feet altitude. Vanished while heading in easterly direction.***Note- there were no clouds; this was a clear night. these craft just disappeared into thin air. A large triangular shaped craft then appeared on the horizon over Monterey bay; I thought it was three separate aircraft flying low over the water when first sighted. As it approached us-(I was with one of my daughters)- I realized with shock that it was one aircraft-not three. It had very bright lights at each corner( I mistook these for conventional  aircraft approach lights.)This aircraft was huge and made no sound as it passed directly over us. It was black and very scary- I was afraid for our safety. The triangle flew over us and disappeared like the others before it. While my daughter and I ran for the car a group (7-10) of the orange spheres came in low over us, seeming to follow the big triangle. They flew off in different directions and made a "whooshing" sound as they darted off at an extremely high rate of speed. They all vanished like the others before they got very far away.
Witness does not include date of event.  We will attempt to establish the date.  PD