Which command is responsible for the development of toughness in Navy Sailors?

The development of toughness in Navy Sailors is primarily the responsibility of the Naval Service Training Command. This command focuses on the training and education of Sailors, emphasizing basic training and leadership development, which are crucial for building physical and mental resilience. Through structured training programs and initiatives, the Naval Service Training Command instills discipline, physical fitness, and a mindset that fosters toughness, both personally and professionally. This command's role is critical in preparing Sailors to handle the challenges they may face in their naval careers, thus ensuring a high standard of readiness and capability in the fleet.