went into back yard around 8:30 pm facing west. Say object in sky ascending and descending then it speed off to the South then turned straight up at a 90 degree turn then hovered. Then headed straight back north again then shot straight down with a 90 degree turn to horizon. seconds later reappeared in a ascending direction hovered descended ascended again shot off again. I called my wife and stepson out to watch it. This went on for maybe 5 min. or longer. I work at Sky Harbor airport As a A&P mechanic and was in the Air Force working on F-16's. Acft. or helicopters don't move like this. I have no idea what this was but sure would love to know. I checked the local news but saw nothing. Any ideas? Thx, Allen Bannister PS the lights were very bright. I tried to video it with my ph. but you can't see it but you can hear us talking about the event.