UFO Sightings Across California, how true?

There have been news about UFO sightings in California; Several reports of the same nature came from civilians in the neighboring cities as well.

Although Federal authorities say there has been no "unusual flight activity" so far, a lot of stories point out to the same. Kaye Pinlac of Stockton told ABCNews:

I seen like six bright orange colored lights

They were almost like in a diamond or triangle shape. It was weird. And so they started just separating

Pinlac captured a video of the said lighted flying object with her smartphone.

Then came witnesses from across California. Some of them relate:

Well, we saw it right through the trees ..It was bright enough to shine directly through the trees without any problem seeing it

Whatever it was moved up and to the left… It hovered there for probably about 60 seconds, then it took off at a high rate of speed.

Residents in Auburn reported similar UFO sightings too. Terry and Hans Mauth told News 10:

No sound, no blinking lights, just this big illuminated form

Despite the series of news bombarding the media releases, Federal Aviation Administration spokesman Ian Gregor said there were no such reports (officially).