Which instruction outlines FPCON Levels?

The correct answer is indeed the instruction that specifically outlines the Force Protection Condition (FPCON) levels. DoDI 2000.16 (series) provides the Department of Defense's policy regarding force protection, which includes the definition and application of the various FPCON levels. These levels detail the specific protective measures that must be implemented based on the current threat level to personnel and assets.

Understanding the structure and implementation of FPCON levels is crucial for personnel responsible for security and force protection, as it directly impacts planning and response strategies to potential threats. This instruction serves as a comprehensive guideline for military installations and commands in establishing a baseline for security measures and readiness based on assessed levels of threat.