UFO SIGHTING ON JUNE 28TH 2017 IN PORTLAND, OREGON. The evening of June 28th I was staying a hotel directly across from the Portland Convention Center. My room window faced out towards the south east of town with great views from the large room windows in the hotel.Around 2137, lasting for nearly 7-10 mins in total before they slowly floated up into the sky and disappeared.I looked out into the nights sky and over the foothills south of town, I noticed several objects in the sky that were much brighter than the stars and far too close to be a satellite or aircraft. These objects simply sat there looking like they were floating in a way. They could be described as looking like large fireball like items in the sky. There were 6 of them all aligned evenly across the nights sky. Then, 1 of them slowly started moving away by going up Into The Nights Sky Slowly, To All Of A sudden it would just disappear out of nowhere. This happened until there were only two left.The strange thing was a Blackhawk police helicopter all a sudden took off from downtown and flew right near the objects where it stayed for a min then turned around and came right back downtown. Shortly after the helicopter arrived back downtown there was all of a sudden out of nowhere a 3rd light that appeared next to the other two lights still hovering there and it literally appeared out of nowhere in the nights sky.I was able to get these objects on film and to this day I still have no clue what those objects were, but I do know one thing after seeing the way they moved and could disappear and reappear out of nowhere they were not of human origin. These objects look very similar to some other ufo sighting I researched online which seems to be a pattern of this from of sighting.