What must a CM5 do before unpacking and operating cranes for GMT reload?

Before unpacking and operating cranes for GMT reload, it is essential for a CM5 to conduct a visual serviceability inspection. This step ensures that the crane is in safe working condition before it is used. The inspection typically includes checking for visible signs of wear and damage, ensuring all components are secure, and verifying that safety features are functioning properly. Conducting this inspection helps to identify any potential issues that could compromise safety or performance during operations.

Addressing the other choices: While performing a load test, checking fluid levels, and calibrating crane controls are indeed important maintenance and operational procedures, they are typically conducted after the visual serviceability inspection confirms that the crane is safe to operate. Prioritizing the visual inspection is crucial to prevent accidents and ensure the crane is ready for the demanding tasks associated with GMT reload.