What should a firefighter do before stepping off a ladder, parapet wall, or other place of safety onto the roof of a burning building, especially if the roof surface is obscured by smoke or darkness?

What should a firefighter do before stepping off a ladder, parapet wall, or other place of safety onto the roof of a burning building, especially if the roof surface is obscured by smoke or darkness?

• A. Sound the roof for structural integrity by striking with an axe
• B. Walk carefully and test each step with foot
• C. Rely on thermal imaging alone
• D. Proceed quickly without testing

Answer: (A)