That pattern is miles away from Veterans Memorial Coliseum in Phoenix, Arizona
That is strange, it is on the wrong side of I-17. Hard to tell the distance but it isn’t going back and forth over the coliseum. Thanks for pointing that out.
I just checked and you are right. The center of that pattern is five miles west of the Veterans Memorial Coliseum.
Perfect position to overwatch the Veterans Memorial Coliseum.
Can't fly directly overhead or to the south or east due to flight patterns in and out to Sky Harbor Class B and flying over down town Phoenix.
North has mountains for obstructions and the Coliseum dome can block views of the parking lot.
Not sure there is a nefarious purpose at work here, but interesting for sure