Light over Mesa, AZ

The report, as filed

Looking SE from my 3rd floor apartment patio, saw what I thought at first glance was the police helicopter circling something but when I looked back it had done this super fast circle and immediately dropped behind the tree/building line of sight. Seconds later, it reappeared and achieved a very high altitude in seconds. I recorded it on my phone and will be sending that footage to you guys as well. In the video, it appears as a blue dot and seems to hover for a bit then starts descending again as a passenger plane approaches. It lowers below the aircraft, hovers for a second, then continues its descent until out of view again. Shortly after a helicopter flew over the area as well as other lights that looked to be small aircraft or helicopters in the distance for about 10 minutes afterwards. I understand this could just be someone playing with a drone or whatever, but the altitude it appears to achieve and the speed it occurs at is something I've honestly never seen before. Never seen a "drone" or anything like this flying in this area of Mesa/East Valley in my whole life. Like I said, could possibly be explained or "debunked" but I felt strong enough about it to let you guys take a look. Thank you.

Held as-reported from National UFO Reporting Center (record NUFORC #133411). Witness text is preserved verbatim, including its spelling; nothing is edited beyond formatting.