At 7:40 p.m. I heard an unusually loud helicopter. It sounded really close. My dogs ran to back room, they don’t ever run from anything.I rushed outside with digital camera ready to record. I saw what looked like three or four helicopters. I went to the street for a better view and noticed it was two helicopters going slow at about 1/4 mile away and 500 feet in elevation. In the new darkness of the day against the city lights they were less than 100 feet behind an object with no lights. This object was half the size of the helicopters length. I am hoping someone can enhance the video. Very hard to see anything but lights.