Exam Prep: Technical Rescuer-Trench and Structural Collapse is designed to thoroughly prepare you for a trench and structural collapse rescue certification or training examination by including the same type of multiple-choice questions you are likely to encounter on the actual exam. To help improve examination scores, this preparation guide follows Performance Training Systems, Inc.'s Systematic Approach to Examination Preparation. Exam Prep: Technical Rescuer-Trench and Structural Collapse is written by fire personnel explicitly for fire personnel, and all content has been verified with the latest reference materials and by a technical review committee. Your exam performance will improve after using this system!