Final answer:
Ventilation is crucial for safety and property protection during firefighting operations, especially post fire extinguishment to remove hazardous gases and improve visibility. NASA has advanced the safety of firefighters with innovations like lightweight breathing systems and fire-resistant materials.
Step-by-step explanation:
Ventilation is utilized during overhaul and loss control in firefighting operations to clear smoke and toxic gases from a structure after a fire has been extinguished. This is important for visibility and safety of firefighters as they work to ensure that all fire has been put out and to salvage property. It also helps in preventing damage to sensitive materials from smoke and heat. Ventilation strategies may include natural airflow or mechanical systems to manage air exchange rates efficiently. NASA's contribution to firefighter safety, such as the development of lightweight breathing systems and fire-resistant materials, has significantly improved the protection and effectiveness of firefighters during these operations.