During a suspected chemical (CBRN) attack inside a building, why is it critical to shut down the heating, ventilation, and air conditioning (HVAC) systems immediately?
- ATo prevent the chemical agent from causing a fire in the ventilation units
- BTo stop the forced air systems from circulating the toxic airborne agent throughout the e…
- CTo trigger the building's automated smoke extraction vents
- DTo save electricity in case emergency services cut power