Character mistake: When Johnny and Roy respond to the 'possible injury at the horse ranch', after the guy who was knocked unconscious gets back on the horse, Johnny tells Roy, "Why don't we stick around for another few minutes, unless we get another call." They did not contact the dispatcher that the squad's available, so they would not even be dispatched to another call, since they're already on that run.
Character mistake: When Johnny is about to tell Roy what the problem is, the dispatcher drops tones and says "Station 51, Engine 36, Truck 116, small aircraft in trouble.," but when Captain Stanley responds we hear him say, "Squad 51, 10-4...," even though he should have said, "Station 51, 10-4...," because both Engine 51 and Squad 51 were dispatched.
Answer: It is standard practice to wet down driveways so that they stand out in a long shot.
stiiggy