Redundant observers in defense planning are intended to trigger or execute essential fires tasks.

• A. They are optional assets
• B. They replace all other observers
• C. They are intended to trigger or execute essential fires tasks
• D. They never fail

Answer: (C)

Redundancy in defense planning means having backup observers ready to perform the same critical duties so essential fires tasks still get done even if the primary observer is unavailable. Redundant observers are there to ensure reliability; their main function is to trigger or execute those vital fire-support tasks—like calling for fire, passing target data, or coordinating the engagement—when the first observer can’t participate. This is why the statement is correct: the purpose of redundancy is to guarantee that the essential fires actions are taken, not to act as optional assets, to replace every other observer, or to guarantee a never-fail system.