Santa Ana September 13, 2021 9:00 pm Santa Ana Unified Begins Mandated Testing Santa Ana Unified has a goal of testing 45,000 students and another 5,000 faculty and staff once a week for COVID-19. Vikki Vargas reports for NBC4 News at 5 p.m. on Sept. 13, 2021. US & World Videos 0:22 Man arrested after pointing gun at person in Rosemead 1:34 2 killed in Pasadena wrong-way crash on 134 Freeway in Pasadena 1:56 Search for gunman who shot and killed teen boy 0:45 Firefighter dies battling house fire in Laguna Niguel 0:22 Man riding scooter killed in hit-and-run crash