Very bright, reddish-color light in the sky, start and stop swaying motion, then dropped straight down toward horizon and disappeared.

I was on the phone with a friend, just passively watching the night sky (as I always do when outside at night), and noticed a light in the sky I first took for a star. The object was hovering. Then it moved left and right in a lazy, swaying kind of motion, before pausing, and then dropping straight down at a very, very fast pace toward the ground. The closest analogy I can muster is that it was like watching a duck falling out of the sky after being shot, it just dropped plumb down from its original position. It disappeared from my view behind a building, but the object had to be quite far away. It was along a line between Mt. Holly, NJ and Rehoboth Beach, DE based on comparisons between my Night Sky App, my phone’s compass app, and Google maps. I tried to find reports on the news, or videos on social media, but found nothing. It would be extremely hard to believe that no one else had seen the same phenomenon.