Imperial Beach May 6, 2024 6:39 pm How water pollution is changing how Imperial Beach lifeguards protect people NBC 7’s Joe Little shows how lifeguards are protecting beachgoers and themselves in toxic ocean waters. US & World Videos 0:47 Search & rescue crew return to San Diego after 3 members hurt in crash on way to Helene recovery efforts 2:11 Rescuers reveal tragic background of trafficked jaguar cub abandoned in Alpine 2:54 Family of slain Chula Vista woman speaks out after husband pleads not guilty 3:12 Here's how to avoid being fined for duty-free shopping 2:00 CDC to begin South Bay health assessment to investigate Tijuana river sewage crisis