Revealing mistake: At the start of the episode, we see Squad 51 speeding toward their destination, and when the camera cuts to the woman in front of the market, she's waving her arms to the squad somewhere in the distance. But notice that while Rosa is looking to her left and waving, we can see Squad 51's reflection in the window (with the liquor bottles), as they are parked right there, just off-screen waiting for their cue to "speedily" pull up.
Revealing mistake: When the Bengal tiger is on the roof, just after the officer warns, "If that cat tries to leave this roof, he's dead before he hits the street," there is a closeup of the tiger and the empty landing below the billboard. A few shots later, after Les steps on the glass, there are pieces of meat scattered on the landing below the billboard, so the trained tiger will jump onto it.
Answer: It is standard practice to wet down driveways so that they stand out in a long shot.
stiiggy