Rio Olympics: Inside Brazil’s Massive Security Operation

With half a million visitors and thousands of athletes to protect, Brazil is taking no chances. NBC’s Miguel Almaguer tours Rio de Janeiro's security operations in the air, sea and on the ground.

Rio Olympics: Inside Brazil’s Massive Security Operation Police search for shooter after four killed at Tennessee Waffle House As chemical weapons inspectors reach Douma, Syria claims suspected attack was fake Cautious optimism after North Korea says it’s suspending nuclear program ‘Accidental Americans’ push back on paying U.S. taxes Controversy over police response to teen trapped by van seat Calls to jam signals around prisons over unauthorized cellphones Less painful, less invasive procedure for bunions Sen. Whitehouse has made more than 200 speeches about climate change North Korea says it’s suspending nuclear and missile tests Avoid romaine lettuce, CDC warns, amid E. coli outbreak Suspect in Ocala, Florida school shooting: ‘I want to be put away’ Barbara Bush remembered for values and impact at funeral service Trump says lawyer Michael Cohen won’t ‘flip’ Fishermen catch lost gear in program using ocean trash for fuel Fishing for energy: Ocean debris turned into fuel in Florida Wave of women making mariachi their own FAA orders emergency inspections after Southwest engine explosion Gas prices on the rise, distressing drivers National student walkouts call for gun-law reform Comey memos describe focus on Michael Flynn Grandmother accused of killing husband, look-alike captured Plastic pollution in oceans and lakes means health risks for humans Legalization of recreational marijuana gaining support on 4/20 Why were two Florida sheriff’s deputies shot and killed in a restaurant? Utah bus driver braids hair of 11-year-old girl who lost mother to illness Video shows inside Southwest plane before emergency landing No criminal charges filed in Prince overdose death Syracuse University suspends fraternity after ‘extremely racist’ video surfaces North Korea drops removal of U.S. troops as condition for denuclearization Wildfires rage in several states with homes destroyed, neighborhoods at risk How YouTube’s algorithm pushes content onto users FDA panel recommends marijuana product to treat epilepsy How this police officer used his viral fame to help communities across the country Police officer uses viral fame to help communities

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