What symbol denotes a mass fire hazard in the US Military Marking System?

What symbol denotes a mass fire hazard in the US Military Marking System?

• A. A circle with a mask
• B. An octagon with a 1
• C. #3 in a triangle
• D. #2 in an X

Answer: (C)

Hazard marking uses a shape plus a number to quickly signal both the type of hazard and its severity. For a mass fire hazard, the symbol is a triangle with the numeral inside it. The triangle identifies the fire-related danger, and the 3 indicates a high level of fire threat—implying that a fire could involve large quantities or affect many people, requiring substantial firefighting and safety measures. The other symbols don’t indicate mass fire hazard: a circle with a mask points to a respiratory/airborne concern, an octagon with 1 points to a different category and lower level, and an X with 2 represents another hazard class entirely.

Hazard marking uses a shape plus a number to quickly signal both the type of hazard and its severity. For a mass fire hazard, the symbol is a triangle with the numeral inside it. The triangle identifies the fire-related danger, and the 3 indicates a high level of fire threat—implying that a fire could involve large quantities or affect many people, requiring substantial firefighting and safety measures. The other symbols don’t indicate mass fire hazard: a circle with a mask points to a respiratory/airborne concern, an octagon with 1 points to a different category and lower level, and an X with 2 represents another hazard class entirely.