Was there a UFO in New York City yesterday?S

Witnesses and videocameras caught a glimpse of some UFOs zooming over New York City yesterday. What were they? No word yet - though officials are, predictably, calling them balloons.

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UPDATE: Apparently these really were balloons, at least according to Matt Ganzak, who reported on Twitter that he saw dozens of balloons being released "from Jersey." Here's a video he took of the balloons.