In Season 3, Episode 9, we were treated to a flyover by one of the Area 51 Security helicopters while sky-watching for UFO activity. In this video we show the complete uncut scene which includes where the helicopter went after flying over us. As you can see in the video, the Area 51 helicopter has a FLIR gimbal on the nose. Certainly they photographed or recorded us on video.
Watch the Area 51 helicopter flyover: