Visible crew/equipment: Camera lights in the dark woods are reflected in Jeff's glasses after he jumps down from a tree and frightens David. (00:09:50)
Visible crew/equipment: After David agrees to be taken to NASA headquarters for a 48 hour observance, Dr. Faraday winks at him, and in the left lens of his glasses (from the viewer's perspective) we can see the camera operator at work. (00:28:35)
Visible crew/equipment: At NASA when David makes the call to his family at home, boom mics are reflected on the phone Bill uses. (00:33:45)
Visible crew/equipment: Special effect projectors and strobe lights can be seen in a reflection on Max as the ship is descending towards the bay - moments before blasting into hyperspace to return David to his home in 1978. (01:22:15)
Visible crew/equipment: When David starts to navigate the ship, watch the metal wall behind him, and you will be able to see the camera crew and realize that the spaceship is a prop by seeing a black wall behind the camera.
Answer: Carolyn wouldn't have wanted David anywhere near the UFO as it could've been dangerous, so it's safe to assume that "Max" programmed the R.A.L.F robot. Although Carolyn didn't have anything to do with with David's escape, it wouldn't have escaped unnoticed that the R.A.L.F robot was in the hanger where the UFO was. Given that she's always the one with the R.A.L.F. robot, it's safe to assume she was acting worried that she'd be blamed rather than acting "shifty"