Which of the following is NOT one of the USSF lines of effort?

The correct answer centers around understanding the distinct lines of effort that define the U.S. Space Force (USSF) mission and objectives. The lines of effort are strategic pillars that focus on specific functions and priorities within the Space Force, emphasizing capabilities that are essential for national defense in the context of space operations.

The line of effort concerning "Fielding Combat-Ready Forces," "Amplifying the Guardian Spirit," and "Partnering to Win" directly align with the USSF's primary mission objectives. Fielding combat-ready forces focuses on developing and maintaining a skilled space workforce and ensuring operational readiness. Amplifying the Guardian Spirit relates to improving technology and innovations that protect U.S. interests in space, while partnering to win emphasizes collaboration with allies and partners to enhance collective space capabilities and strategies.

In contrast, "Intelligence Gathering" does not explicitly represent a distinct line of effort for the USSF. While intelligence is an important aspect of military operations, the USSF's focus is more on operational readiness, technology, and partnerships in the domain of space rather than intelligence gathering as a standalone line of effort. Therefore, selecting this option reflects an understanding of the strategic focus of the U.S. Space Force.