A firefighter fights these fires with the intent to prevent destruction of life, property and the environment.

The gates themselves were normally wooden with metal covering plates to prevent destruction by fire.

The same temperature must be maintained throughout the cell in order to prevent destruction of the cell through thermal loading.

As a result of its mainly intracellular niche, parasitized host cells which display parasite proteins must be modified to prevent destruction by the host immune defenses.

The 23 missions include rescuing trapped victims, preventing destruction of buildings, and controlling for each situation all under a time limit.