UFO Sighting in Milwaukee, Wisconsin on 2017-07-03 23:00:00 - Bright light visible from 4th floor apartment window after watching milwaukee fireworks

in milwaukee wi off of 5th and walker, my fiancé and i were just finishing watching the nearby firework show from our fourth floor window. she happened to look outside after the fireworks had been finished around 11pm and noticed a very bright and clearly visible glowing reddish orange ball of light. she called me to the window, excitedly yelling for me to grab the binoculars and to see this strange sight. we knew that this was not a usual flying craft, since we live so close to a large airport. there were spotlights from a music festival nearby and constant airplane traffic overhead ( planes were at a much higher altitude). when viewing the ufo from the binoculars, we both witnessed that it seemed to be a transparent white color,while without viewing from them, seemed a reddish orange. we followed the path of the ufo switching between normal eyesight and binocular view. it was on a straight path, constantly moving forward on a slight curve going west, northwest. we were both very excited. my fiancé was calling to the ufo to come back but after about 5 minutes we both lost visual when it continued it's same path and went behind a building where it was no longer visible.