Visible crew/equipment: When Station 51 is dispatched to the traffic accident, while en route there's a shot from the POV of the top of Squad 51, and the reflection of the cameraman, who's wearing a yellow shirt, is visible on the lightbar's red dome and chrome surface.
Visible crew/equipment: When John and Roy help the driver out of the overturned armored truck, the bulging outline of the mic transmitter is visible on the left side of the driver's shirt, and when Roy's arm is around the man's waist, Roy even puts his palm over the mic transmitter as he bends to pickup the man's gun.
Answer: It is standard practice to wet down driveways so that they stand out in a long shot.
stiiggy