Fast Orbs Above the Lights

The first photo below I took on October 7, 2016, and the second on October 9, 2016. In both we see mysterious orbs that seem to be speeding very fast above a row of lights at Grand Central Terminal in New York.  The one on the right seems to be speeding down, then turning up, then turning to the right. Turns this sharp are never made by natural things.  See here for similar photos.