The most challenging risks that emergency responders need protection from are hazardous chemicals that they could inhale. These hazards are the most difficult to identify and the equipment used to protect responders from them can be the most cumbersome.  -   Henry Willis     Quotes
The most challenging risks that emergency responders need protection from are hazardous chemicals that they could inhale. These hazards are the most difficult to identify and the equipment used to protect responders from them can be the most cumbersome. Henry Willis