Other mistake: When dispatch drops tones for the fire at Graymar Plaza, we see Engine 8 rolling out of the apparatus bay and heading down the street, but the problem here is that this footage of Engine 8 is from season 5, episode "Equipment", when Johnny was at Station 8 doing overtime, and we can actually see Johnny sitting there on Engine 8 as it rolls by.
Other mistake: When Pete shows Laurie the newspaper, in the closeup of the article about Gail and Laurie entitled "women paramedics save shooting victims", the paragraphs under and around the title are repeated, and have nothing to do with the title.
Greatest Rescues of Emergency - S7-E5
Other mistake: As the men are receiving their new badges and the chief congratulates them, he calls Craig Brice. The Brice that accepts the new rank is a black man. In all previous episodes, Brice is white.
Greatest Rescues of Emergency - S7-E5
Other mistake: After getting their promotions, Roy and Johnny start recalling their history together and when Johnny remembers joining the paramedic program he says he was at 8's, but Johnny was at 10's and it even shows the clip from the show's pilot where Johnny's standing behind Engine 10 talking with his Battalion Chief. The filming of the show's Station 10 was done at the real Station 8. As an aside, the real Station 8 was also seen in the 1950's TV show Rescue 8.
Answer: It is standard practice to wet down driveways so that they stand out in a long shot.
stiiggy