Visible crew/equipment: When the two ambulance attendants remove and roll the stretcher away from the ambulance, towards the stockbroker with chest pains, just as the words "Directed by Dennis Donnelly" appear onscreen, the moving shadow of the cameraman holding a handheld camera is visible on the ground.
Visible crew/equipment: At Rampart, Johnny and Roy step out of the elevator and walk down the hallway discussing the inheritance, and when Roy bends down at the water fountain the outlines of the lav mic transmitter, wire and even the dark strap (that holds the transmitter) around his waist are visible on the back of his shirt.
Visible crew/equipment: When Engine 51 rolls up on scene at the paint factory structure fire, Captain Stanley heads towards the street corner, and we can see the actor's white T-mark on the ground before he gets on the HT.
Visible crew/equipment: When Roy tells Billy not to get out of the car because of the downed electrical wires, the outlines of the mic transmitter and wire are visible on the back of Roy's shirt.
Visible crew/equipment: When Brackett tells the orderlies to take the stock broker to the CCU and they tend to him, an actor's T-mark is visible under the gurney while it's still propped up, just before Dixie stands on that spot.
Visible crew/equipment: When 51's guys are sitting around the table discussing the inheritance, numerous overhead set lights are reflected on the chrome coffee pot's surface.
Visible crew/equipment: After Johnny tells Roy not to phone Joanne about the inheritance, when Chet walks into the kitchen announcing that it'll cost $2.25, the small black tape mark is visible on the floor where Johnny and Roy were standing.
Answer: It is standard practice to wet down driveways so that they stand out in a long shot.
stiiggy