What is a required qualification for all personnel in the program?

A periodic medical examination is crucial for all personnel in the program as it ensures that individuals meet the necessary physical and health standards required to perform their duties effectively and safely. This type of examination assesses the overall health of personnel, identifying any medical issues that may impede their ability to carry out critical tasks in potentially hazardous environments. Maintaining health and fitness is especially vital for roles related to weapon systems and operational readiness.

While the other options like periodic training updates, continuous operational assessments, and annual safety drills provide essential components of personnel readiness and safety, the specific requirement of a periodic medical examination directly ties to ensuring that all personnel are physically capable of undertaking the responsibilities associated with their roles. This health assurance forms a foundational aspect of operational effectiveness in any military program.