Which of the following is NOT one of the five functions of the USAF Cybersecurity Program?

The five functions of the USAF Cybersecurity Program include Identify, Protect, Detect, Respond, and Recover. Each of these functions plays a critical role in safeguarding information and information systems from cyber threats.

The function labeled "Develop" is not part of these five essential functions. The correct functions focus on managing cybersecurity risks: identifying assets and vulnerabilities, protecting systems, detecting threats, responding to incidents, and recovering from any impacts of cyber incidents.

"Develop" may imply the creation or enhancement of cybersecurity practices or skills, but it does not fit within the established framework of the USAF Cybersecurity Program functions. Therefore, this understanding clarifies why "Develop" is not recognized as one of the core functions responsible for ensuring cybersecurity within the USAF framework.