What term describes kill box airspace status where aircraft are permitted?

• A. Open
• B. Purple Kill Box
• C. Closed
• D. Killbox Airspace Status Established (Blue/Purple) and A/C Are Permitted

Answer: (B)

A kill box is a defined airspace where forces may engage targets under approved authority. When the status is Purple Kill Box, it signals a permissive condition: aircraft are cleared to employ munitions inside the box under the established coordination and ROE. This designation directly communicates that fires are allowed within the box, with the proper safety and deconfliction measures in place. Open and Closed convey different, less precise states—Open isn’t the official permissive designation for fires inside a kill box, while Closed means no engagement is allowed. The Blue/Purple phrasing is a less common, longer label, but the standard, concise term used to indicate permission to engage inside the kill box is Purple Kill Box.