Along the way they stop at a hotel to rest and during their stay the hotel catches on fire. This Fireman is one of the men who worked to extinguish the blaze.
As the fireman is working to rescure people he encounters Dream and tells him to “Move it” and to leave through the fire exit.
Dream asks if they know how the fire started and the fireman tells him that the lady in the room next to his was smoking in bed and fell asleep, causing the fire. This woman was Ruby DeLonge.
This fireman appears in Sandman # 44, on page 23 in panel 1.