VIDEO: Paramedic Scott Lazar, a 16-year veteran of the Los Angeles Fire Department, is used to treating the same person, sometimes on the same day, on Skid Row.
"Deja vu, yeah, it's every day down here," Lazar told "Nightline" as he treats a man for an overdose, as he did just the day before.
Over five months, "Nightline" got an exclusive look at life at Lazar's LAFD Station 9, rare access to the day-to-day operations of this team and a glimpse into daily life for this city's most vulnerable. Station 9 is one of the busiest fire stations in the country, receiving an average of 80 calls a day -- mostly to treat those living on the street in L.A.'s well-known Skid Row.
Lazar and his partner, Mike Contreras, are members of the fast-response vehicles at the station. Their job is to dart ahead of fire engines to assess the situation and gauge the required resources.