Visible crew/equipment: When the guys are at the scene of the vehicle accident, after Roy asks Captain Stanley and Captain of 69 to assist the man to the top of the hill, the reflection of the array lighting is visible on the side of Engine 51 as Mike works the engine's pump panel.
I'll Fix It - S4-E2
Visible crew/equipment: When Roy and John walk into the grocery deli, a few of the location shoot's array lighting are reflected on the glass door.
Visible crew/equipment: When Station 51 is dispatched to the industrial accident, with the big guy suffering from a chemically induced psychosis, the outline of the mic transmitter and wire are visible on the right side of the big guy's T-shirt.
Visible crew/equipment: When Station 51 is dispatched to the structure fire at the Kiddytime Toy Factory, while en route there's a shot from the POV of the top of Squad 51, and the reflection of the cameraman and the camera can be seen on the lightbar's chrome surface.
Visible crew/equipment: At the start, when dispatch interrupts the mannequin practice with a structure fire, after the shot of Mike getting into his turnout, as Engine 51 rolls out of the apparatus bay, the reflection of array set lighting and two reflector screens are visible on the moving engine.
Visible crew/equipment: After the ambulance transporting the cardiac victim is involved in a traffic accident, when Roy contacts the dispatcher about the accident, the reflection of location set lighting is visible on the back window of the ambulance.
Visible crew/equipment: After everyone worked together on the cardiac arrest while the visiting administrators watched, at the nurses' station, when Johnny pours the coffee for himself, which Roy promptly takes, the reflection of set lights and equipment are visible in the very reflective chrome coffee pot.
It's How You Play the Game - S4-E19
Visible crew/equipment: When Squad 51 is en route to the car salesman who was bitten by a tiger, just before the squad turns into the car lot, the reflection of the filming vehicle is visible in the squad's spotlight.
Visible crew/equipment: After Station 51 rescues the novelist from his attempted suicide, when John accompanies the stretcher into the ER, the outlines of the mic transmitter and wire are visible on the back of his shirt.
Visible crew/equipment: When John and Roy tackle the hallucinating veteran, the outlines of the mic transmitter and wire are visible on the back of Johnny's shirt. As an aside, this scene was shot right outside Universal Studios, note the Black Tower/MCA Tower (which houses Universal's execs) when John tells the veteran that it's not a trick and to calm down.
Visible crew/equipment: When Roy and Johnny are with the guy who skateboarded and fell into the cactus bush, the outline of the mic transmitter is visible on Johnny's right side.
Visible crew/equipment: After Squad 51 responds to the 'man unconscious' at the laundromat, while they're en route, when Engine 36 contacts them that the man is in full arrest, the reflection of the vehicle with the camera is visible on the spotlight.
Visible crew/equipment: After Chet tells the guys that they have to get rid of The Mouse, when he says "You don't understand, these things are like rabbits," the moving shadow of equipment, probably the boom mic, is visible on the top cabinet behind Chet.
Visible crew/equipment: After the guys decide to eat lunch before resuming their CPR practice, when Chet picks up the CPR mannequin and walks toward the fridge, the top of the set is visible at the corner, between the fridge and the stove. We can see the top of the set again later, after Chet picks the losing matchstick and has to set the mousetrap himself.
Daisy's Pick Blind Date - S4-E7
Visible crew/equipment: After the hypothermic victim is rescued from the ice house, just as the attendants wheel the stretcher into the ER, at the end of the hallway, the top of the set is visible where the ceiling should be.
Visible crew/equipment: While Roy is hanging off the side of the building with the second victim, Johnny's trying to tie off the swaying sign, then after he asks for some slack the second time, there's an overhead shot from the roof, and we can see the shadow of the camera and a bit of a crew member, at the bottom of the screen. Then a few shots later, from the same POV, we still see the camera's shadow, and we also see the leg of a crew member (white sneaker and dark pants) walk into the shot and back out, at the left of the screen.
It's How You Play the Game - S4-E19
Visible crew/equipment: At the scene of the traffic accident, when the injured driver starts shouting just before they load the stretcher onto the ambulance, a ducking crew member's head dips into view at the bottom, right corner of the screen.
It's How You Play the Game - S4-E19
Visible crew/equipment: After John is punched in the nose at the scene of the traffic accident, when the ambulance arrives the reflection of set lighting is visible on the surface of the ambulance.
Visible crew/equipment: After Station 51 is dispatched to the plane in trouble, just as Engine 51 makes the right turn into the lot, before they park beside the squad, a crew member's/cameraman's sleeve gets into the shot, at the left of the screen.
Visible crew/equipment: When Johnny and Roy are at the top of the open drawbridge, beside the car hanging over the edge, just after Roy says "Be careful, this could go at any minute," the moving shadows of the cameraman and another crew member are visible on the bridge surface. That shadow is visible in two other previous shots from the same angle.
Answer: It is standard practice to wet down driveways so that they stand out in a long shot.
stiiggy