Which letters are used to map a geographical area for exposures?

• A. A, B, C, and D
• B. E, F, G, H
• C. I, J, K, L
• D. M, N, O, P

Answer: (A)

The key idea is to map potential exposures around a fire scene using a simple, four-quadrant labeling system so nothing is overlooked. By dividing the area into four surrounding sectors and assigning the first four letters of the alphabet to those sectors, you create a clear, quick way to communicate which exposures need protection and where they are located on the ground. This four-part approach keeps the map straightforward on the fireground, helping to speed up decisions about shielding and attack lines.

Choosing more extended groupings (like the next sets of letters) would imply additional zones that aren’t typically necessary for an initial exposure assessment and can complicate communication and rapid decision-making. The four-letter labeling is the efficient standard for this purpose.