Weird bright UFO filmed in night in Cave Creek

On August 2015, several nights in a row, a person living in Cave Creek (Maricopa County, Arizona) has filmed with a camera video multiple weird glowing UFO. What is it?

Witness report:

I was shutting down my computer when the motion detection alarm sounded on my computer. I checked the camera video but there was nothing on it. Checked the still photos and that was when I found the images. At first I thought it was a firefly or something of that matter, but realized that fireflies don't leave trails like in the photo. I didn't pay much attention until it showed up the second and third night. That was when I thought it was something different. I was not able to observe it first hand, I only saw it in the photos. After the second night I thought it was kind of spooky.