Visible crew/equipment: When Rabb and Bud meet Elaine on the beach a boom Mic is visible.
Rendezvous - S2-E15
Visible crew/equipment: In the scene where Bud is shredding the satelite photograph, when he turns around to talk to Harriet, a microphone dips into the scene for a quick second.
Chosen answer: When landing on an aircraft carrier, a pilot "calls the ball" by confirming to the landing signal officer (LSO) that they have the carrier, and more specifically its landing guidance systems in sight. Carriers use a Fresnel lens system which is a light only visible at a certain angle, so if a pilot sees the "ball" they are at the correct altitude and glide slope for landing.
Sierra1 ★