Final answer:
In NATOPS, the term 'Will' signifies a mandatory requirement or action that must be followed exactly as stated for the safe and efficient operation of Navy and Marine Corps aircraft.
Step-by-step explanation:
In the context of NATOPS, which stands for Navy Air Training and Operating Procedures Standardization, the term 'Will' indicates a mandatory action, procedure, or requirement. NATOPS manuals are comprehensive documents that provide standardized instructions for the operation of Navy and Marine Corps aircraft, and the use of 'Will' implies that the associated instructions are not optional and must be followed as directed to maintain safety and efficiency in flight operations.
For example, if the manual states 'the pilot will conduct a pre-flight check before take-off,' this means it is an absolute requirement that must be completed every time, without exceptions.