Bronze Cross teaches the difference between lifesaving and lifeguarding, the. The AED TA course is for any RLSS UK Pool Lifeguard Trainer Assessor. Apply to apprentice on an original National Lifeguard Pool, Current within 2 years, recertified at least once. Trainer and Assessor Courses Pass your knowledge on and help teach others. Bronze Cross teaches the difference between lifesaving and lifeguarding, the.