no issues or acknowledgement of the craft...
Florham Park, New Jersey - 04-28-17
I was walking through my office park when I saw a craft in the air to the right of the runway. It wobbled up to a height about 500 feet above the runway, then hovered briefly.
After hovering, it appeared to get smaller. I photographed the craft with a Nikon D3200 and 200 millimeter lens. It was a clear day.
I managed to get a picture during the hovering that is clear. There was no noise from the craft. There was no chatter on the air traffic control regarding planes out of the pattern, balloons, drones, etc.
Planes continued to take off and land with no issues or acknowledgement of the craft.