In US&R operations, Phase IV refers to which type of debris removal?

• A. Immediate removal of all debris
• B. Selected Debris Removal
• C. No debris removal
• D. Debris removal after search

Answer: (B)

Phase IV is about removing debris in a controlled, prioritized way to support life-safety goals without compromising unstable structure. The idea is to select which debris must be moved to improve access, reach trapped victims, or create safer egress, while keeping the structure stable and reducing additional hazards. That makes Selected Debris Removal the best fit: it emphasizes doing only what's necessary and safe to progress the mission, rather than sweeping away all debris indiscriminately or waiting until after the search.

Immediate removal of all debris would risk destabilizing the structure and creating new hazards; debris removal after search delays critical access and can hinder life-safety operations. No debris removal is simply not practical when debris blocks routes, obstructs searches, or prevents rescue.