What is the responsibility of the first back-up unit?

• A. Focuses on perimeter only
• B. Controls the opposing side from the primary, maintains visual contact with suspects and vehicle while primary invites suspects out
• C. In charge of cuffing only
• D. Directs traffic away from the scene

Answer: (B)

The key idea is that the first back-up unit provides immediate cross-coverage to the primary officer, staying on the opposite side to keep the suspect and vehicle under continuous observation. By controlling the opposing side, this backup creates a safer, two-person envelope: the primary officer handles the approach and invites the suspects out, while the backup watches for sudden moves, weapons, or attempts to flee from the other side. Maintaining visual contact with both the suspects and the vehicle allows quick reaction to any threat and helps prevent ambushes or surprises as the arrest unfolds. This coordinated positioning is essential for safety and control during the initial arrest phase, which is why that option is the best fit.