March 15, 2013 9:00 pm Falling Power Poles Create ‘Domino Effect' Poles that fell in El Cajon on Thursday afternoon affected residents for hours afterwards. NBC 7’s Jane Boal reports. 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