Which EFST element corresponds to 6400 mils firing capacity?

• A. The Task
• B. Pri, Alt, Supp Pos
• C. 6400 mils firing capacity
• D. 2km x 2km

Answer: (C)

Understanding that firing capacity is described in mils explains this. The field of fire is defined by how many mils the weapon system can cover; a full 360-degree arc is 6400 mils. So, the EFST element that communicates the available arc is the line that states the firing capacity in mils. In this case, the element simply declaring 6400 mils firing capacity directly conveys the extent of the firing arc, making it the correct choice. The other options describe the task, positional choices (primary/alternate/suppress positions), or the size of a potential area, but none of those specify the extent of the firing arc.