A very large size, gray color object hover without any noice over brooklyn. i personally don't know what it could be. i had a good 15 minutes sharp view of the object. i was trying to be rational but find no answer. unfortunately the video footage doesn't give back the ratio of the object. much larger than a boeing ch-47 chinook helicopter. i have photos captured also and after zooming i saw the object have colors and lights. date 03-05-17 brooklyn 8am