What is the only squad formation that cannot be accomplished by a fire team?

The Squad Veer formation is specifically designed to be maneuvered by a squad as a whole rather than by an individual fire team. This formation allows the squad to change direction while maintaining their tactical integrity and orientation. The nature of a fire team, which typically consists of a smaller number of Marines, limits its capacity to effectively execute the veer maneuver as it requires more coordination and spacing that is characteristic of an entire squad.

Other formations, such as Squad Column, Squad Line, and Squad Wedge, can be adapted for both squads and fire teams because they primarily focus on cohesion and fire superiority while allowing for effective movement and engagement of the enemy. The veering action involves both lateral movement and depth adjustment which is best suited for a larger unit, emphasizing why it's not feasible for a fire team. Thus, the distinction lies in the coordination and operational capability required to effectively perform a Squad Veer, which outstrips the capabilities of a fire team.