What is one reason for checking the Scott POB's tamper shield?

Checking the tamper shield on the Scott Portable Oxygen Bottle (POB) is essential for verifying that it is intact for safety compliance. The tamper shield serves as a protective measure to prevent unauthorized access or tampering, which is critical for ensuring that the oxygen supply remains uncompromised and ready for use in emergencies. If the tamper shield is damaged or removed, it could indicate that the oxygen bottle may have been tampered with, affecting its functioning during a critical time. Thus, ensuring the integrity of the tamper shield directly correlates with maintaining the safety standards required on the aircraft and protecting the safety of passengers and crew during flights.