Those Chelsea UFOs Were Westchester Wedding Balloons? 4.70K Adrian Chen 10/14/10 06:48PM Filed to: ufos ufos New York explanations Westchester Those UFOs over Manhattan may have been a clutch of balloons from a Westchester engagement party. Congratulations, you scared the crap out of New Yorkers for a day! On their 10th anniversary they'll plant a fake bomb in Times Square.