Which marking identifies a mass fire hazard in the U.S. Military Marking System?

Which marking identifies a mass fire hazard in the U.S. Military Marking System?

• A. #1 in a square.
• B. #2 in an X.
• C. #4 in a circle.
• D. #3 in a triangle.

Answer: (D)

Mass fire hazard is identified by a triangular marking with the numeral three in the U.S. Military Marking System. The triangle shape is used to flag hazards where a fire could involve a large quantity or spread rapidly, signaling responders to treat the material as capable of causing a mass fire. The number three specifies the particular hazard category within that system. Other shapes and numbers are used for different hazard types, so they do not indicate mass fire risk.

Mass fire hazard is identified by a triangular marking with the numeral three in the U.S. Military Marking System. The triangle shape is used to flag hazards where a fire could involve a large quantity or spread rapidly, signaling responders to treat the material as capable of causing a mass fire. The number three specifies the particular hazard category within that system. Other shapes and numbers are used for different hazard types, so they do not indicate mass fire risk.