No sound . It went right over an FAA Tracon facility

I saw the object approaching at a slow rate of speed . I thought it was a flock of birds then noticed the size wasn’t consistent with a group of birds and the movement was strange almost as if it hovered . Then I noticed it had what seemed to be a payload attached. The object seemed to hover then moved in a westerly direction. I thought it was moving slowly but it went out of sight as if it was traveling faster than the wind would carry it .