Myself and 3 friends were on my back deck on the evening of december 31, 2016. we were smoking cigarettes and noticed a bright red orb fly from west to east. we at first thought it was a helicopter, but it made no noise. it went behind a tree and disappeared. then periodically throughout the night, when we would go outside to smoke, we saw more. at one point, there was a line of 6 orbs, one right after another, flying silently from west to east. all of us were trying to "debunk" what we were seeing, but the fact that they made no noise, and then seemingly disappeared into the sky to the east (cloudless night), we were at a loss for words. last sighting was around midnight. we all then got in the hot tub in hopes of seeing more, but we didn't see any more after that.