United States July 1, 2019 5:40 am Free App Helps Visually Impaired Navigate Chula Vista A new app is now free in Chula Vista to help those who are blind or visually impaired navigate the city. NBC 7’s Audra Stafford has more. US & World Videos 2:45 La Jolla Concours d'Elegance classic race cars 1:39 Troops Endure Hyper-Realistic Training 2:07 New study links consuming red meat with dementia 2:05 Police find, return dozens of abandoned Amazon packages 0:28 A Vermont state trooper plunges into icy pond to rescue 8-year-old girl