Firefighter's acronyms                                                                                                                                              
	| 555 | SOC | Special Operations Command | - | 
	| 554 | RECEOVES | Rescue, Exposures, Containment, Extinguish, Overhaul – Ventilation, Environment, Salvage | - | 
	| 553 | TLV/TWA | Threshold Limit Value - Time-Weighted Average | gas | 
	| 552 | RACE | Rescue, Alarm, Confine, Extinguish | Fire Response Plan | 
	| 551 | ASFP | Association for Specialist Fire Protection | - | 
	| 550 | DB | Dead Body | - | 
	| 549 | PV | Personal Vehicle | - | 
	| 548 | SFO | Senior Fire Officer | - | 
	| 547 | HERO | Hazards of Electromagnetic Radiation to Ordnance | - | 
	| 546 | HERN | Hospital Emergency Radio Network | - | 
	| 545 | HERF | Hazard Electromagnetic Radiation to Fuels | - | 
	| 544 | HERP | Hazard Electromagnetic Radiation to Personnel | - | 
	| 543 | VEIS | Vent Enter Isolate Search | Victim Rescue | 
	| 542 | RECOVERS | see RECEOVES | - | 
	| 541 | CFR | Certified First Responder | Certificate | 
	| 540 | MVU | Mobile Ventilation Unit (truck-mounted fan) | Vehicle | 
	| 539 | TSU | Tactical Support Unit | Vehicle | 
	| 538 | MERV | Major Emergency Response Vehicle | Vehicle | 
	| 537 | HMTU | Hazardous Materials Technician Unit | Vehicle | 
	| 536 | ATRV | All Terrain Response Vehicle | Vehicle | 
	| 535 | RMA | Refused Medical Attention | Medical Patient | 
	| 534 | SA | Situational Awareness | Wildfire | 
	| 533 | BAG | where has the fire (B)een - where is it (A)t - where is it (G)oing | Structure Fire / Size-Up | 
	| 532 | TTY | Text Telephone | Communication | 
	| 531 | ANI | Automatic Number Identification | Communication | 
	| 530 | AVPU | Alert Verbal Pain Unresponsive | First Aid | 
	| 529 | VRT | Vehicle Rescue Technician | Course | 
	| 528 | NFORS | National Fire Operations Reporting System | - | 
	| 527 | FIB | Fire In Building | Fire | 
	| 526 | CSRT | Confined Space Rescue Technician | Course | 
	| 525 | SRT | Swiftwater and Flood Rescue Technician | Course | 
	| 524 | SFRBO | Swiftwater and Flood Rescue Boat Operator | Course | 
	| 523 | RRT | Rope Rescue Technician | Course | 
	| 522 | DRT | Dead Right There | US | 
	| 521 | RIT | see RIC | - | 
	| 520 | RECEO | RECEOVES | - | 
	| 519 | NFPA | Not For Practical Application | - | 
	| 518 | LACES | Lookouts Awareness Communications Escape | - | 
	| 517 | IDLH | Immediately Dangerous To Life And Health | - | 
	| 516 | GPM | Gallons Per Minute | US | 
	| 515 | SCBA | Self-contained Breathing Apparatus | - |