I speculate that the first one is a hoax:

The "Phoenix lights" in the second video were almost certainly flares dropped from a military plane, but there were other UFOs reported, e.g. a huge V-shaped one.

it seems to be tethered and blowing with a breeze

the first video:

As for the lights over Phoenix, I saw a program on the Science Channel in which a film expert overlaid the video of the lights onto a daylight photo taken from the exact place the video was shot. In the daylight photo, the mountains in the distance were visible, and as the video played over the photo, each of the lights vanished as they dropped past the top of the mountain. The lights were probably flares dropped by airplanes.

It's the UFO that's fake. Apparently, you (and Viva_La_Revolution) didn't watch the video in post #2.

What an ingenious contraption it is!

Interesting.

The China Government has been doing alot of testing of aircraft. Is it posible Brazil has sold them airspace to perform thier experiements?

Naturally China, with a huge desert area in which to test aircraft, would prefer to ship them to the east coast of South America in order to test them.

That was a common "UFO" years ago.

None of this explains what I saw though.

I was floating on my back in a pool away from city lights relaxing after a long day when I saw a faint light like a star moving across the sky. After a while I realized it was covering a LOT of the night sky to have been a high flying jet and thought to myself, "Cool! It's got to be a satellite!" which made sense because it was travelling due north which would fit a polar orbit mapping mission like NASA's Landstat. Then I remembered when the family went out to watch the Telstar satellite go over our back yard. It was about then the object I was watching made a perfect 90 degree turn without slowing down as it headed due west....

So there I am, floating in the pool and thinking, ".........okayyyy,.......riiiiiight,........gotcha,.....uh huh....."