Fireworks, crystal ball help usher in 2018 around the world

From spectacular fireworks in Hong Kong and Australia to a huge LED lightshow at the world’s tallest building in Dubai, a look at how revelers around the world are ringing in 2018:
LAS VEGAS
Las Vegas police officers surrounded hundreds of thousands of tourists gathered to welcome the new year on the Strip, where just three months earlier 58 people died in the deadliest mass shooting in modern U.S. history.
Police cruisers, dump trucks and other large vehicles blocked key intersections to