content: A somewhat unrelated incident occurred last Friday at the beyonce concert at metlife stadium.  Sometime around 19:00, a helicopter took off from the stadium controlled helipad.  This helicopter spent about 20 minutes flying directly over the stadium, while the stadium was filled with ~40,000 people.  After flying directly over, it spent another 20 minutes flying around the stadium, then hovered over the parking lot for some period of time.  State police at the event called it, and this is a direct quote, "unidentified, definitely not police" I was not able to find any information outside of one blog post that referenced the helicopter.  As you stated, the stadium is a designated no fly zone while it is filled.  How or why this helicopter was flying directly over a filled stadium is a mystery.