Rancho Cucamonga June 30, 2021 7:04 pm Some Hiking Trails Closed Off For July 4th Amid Extreme Heat and Fire Danger San Bernardino County Fire officials are concerned about the extremely dry conditions near Rancho Cucamonga. Tony Shin reports for NBC4 on June 30, 2021. US & World Videos 12:18 The Rundown: Monday May 20, 2024 0:55 Thieves hit convenience stores in Orange County 2:21 Iranian president killed in helicopter crash 2:58 Helicopter carrying Iranian president crashes 2:33 Man steals LAPD cruiser with officer inside