ALS (Advanced Life Support) Rescue Ambulance – these vehicles are often referred to as “RAs” rather than the FEMA-standard MEDIC used by some departments. LAFD ALS RAs are staffed by two Firefighter/Paramedics. The numeric distinction between an ALS and BLS (Basic Life Support) ambulance is easily established visually. All LAFD BLS Rescues are numbered in the “800” series. So, Rescue 827 is a BLS Ambulance, while Rescue 27 is an ALS Ambulance. Some stations have more than one ALS ambulance. As an example, Fire Station 9 houses RA 9 and RA 209.