Related by context. Frequent words. (Click for all words.) 57 oxygen mask 52 breathing apparatus 48 fire extinguishers 45 rescuers 44 masks 43 oxygen tanks 42 oxygen tank 42 cockpit 41 respirators 41 emergency responders 40 vests 40 seatbelts 40 oxygen 40 parachutes 40 fire extinguisher 39 protective gear 39 ventilators 39 protective suits 39 smoke detectors 38 defibrillators 38 landing gear 38 aircrew 38 plane 38 pagers 38 AEDs 38 seat belts 38 blankets 38 Rescuers 38 jackets 37 smoke alarms 37 NTSB 37 carbon monoxide detectors 37 parachute 37 defibrillator 37 earplugs 36 stretchers 36 fuselage 36 spacesuit 36 surgical masks 36 helmets 36 bladders 36 smoke inhalation 36 seatbelt 36 ventilation 36 cots 36 seat belt 35 firefighters 35 rafts 35 handkerchiefs 35 smoke detector 35 cockpit voice 35 goggles 35 paramedics 35 smoke alarm 35 night vision goggles 35 rescue 35 alarm sounded 35 collars 35 capsule 35 difficulty breathing 35 takeoff 35 airway 34 fire retardant 34 emergency 34 resuscitation 34 ambulances 34 Rescue crews 34 firemen 34 protective clothing 34 firetrucks 34 canisters 34 ventilate 34 paramedic 34 rescuer 33 Ambulances 33 chutes 33 hypothermia 33 headsets 33 firefighting 33 hoods 33 CRJ 33 Paramedics 33 helicopter 33 smelled smoke 33 lifeboats 33 flight recorders 33 Black Hawk helicopters 33 CPR 33 cardiopulmonary resuscitation 33 emergencies 33 gloves 33 helicopters 33 winter coats 33 airways 33 harnesses 33 Rescue 33 Tasers 33 PFD 33 chute 33 inhalers 33 carbon monoxide