The London Olympics are less thanone hundred days away.Across the world,many competitors still have to qualifyfor the sixteen days of competition.Others are entering the final weeks of training.Three hundred thousand peopleare expected to travel to the British capitalfor the Summer Olympic Games.The opening ceremonies are on July twenty-seventh.Wednesday marked the one-hundred-day point.Sebastian Coe -- the British runnerwho won two Olympic gold medals-- is chairman of the London 2012 organizing committee.SEBASTIAN COE: "It signifies, first of all,still an extraordinary amount of work still to do,but I think one hundred days,it means something to people.When you're talking about seven years, six years, five years, four years,but actually when you're really talking about days,and we're talking twelve Wednesdays or something,I mean it really is, it's very close."The Olympic Park is mostly complete.The Aquatic Center is ready for the likes ofAmerican swimmer Michael Phelps.He will attempt to build on his recordfourteen Olympic gold medals.In east London, other Olympic sites are taking shape.International Olympic Committee President Jacques Roggevisited the sites and offered an opinionto Prime Minister David Cameron.JACQUES ROGGE: "There is already,before the Games even begin,a great legacy in east London,a great legacy of the sports venuesand this is a tangible legacy.To conclude, prime minister,we are a happy International Olympic Committee.Thank you very much."But not everyone is happy.On two days this week, immigration linesreached well over ninety minutesat Heathrow, London's main airport.Some travelers expressed their angerand shared photographs on the Internet.British lawmakers are warningthat Olympic visitors could face long waitsin immigration lines or on airplanes.The government says it will be ready.A temporary terminal at the airporthas been built especially for Olympic competitors.There are also concerns about traffic on roadsand crowds on public transportation during the Games.Another concern is security.This will be Britain's biggestpeacetime security operation ever.The security budget has doubledto eight hundred eighty-two million dollars.In a late addition, the Ministry of Defenseis providing thirteen thousandfive hundred soldiers for the Games.David Rubens is a security consultant specializingin the Olympics.DAVID RUBENS: "It's very difficult to maintain the balancebetween an open and welcoming event and security management.It's different from what happened in Vancouver,it's certainly different from what happened in Beijing.And the people responsible will be lying awakeat night trying to wonder whether they've got that balance right,and the answer is, if it goes wrong, then you got it wrong."Terrorists are not the only concern.A protester recently halted the historic rowing racebetween Oxford and Cambridge universities along the River Thames.Trenton Oldfield swam in front of Oxford's boat,forcing the race to be restarted.He said he did it as a protestagainst what he called "elitist society."His actions led the chief of the British Olympic Associationto warn that it would take "just one idiot"to ruin the Summer Olympics.The next Olympics are the twenty-fourteen Winter Gamesin Sochi, Russia.Then come the twenty-sixteen Summer Games in Rio de Janeiro.But first Brazil will hold another of the world'smajor sporting events: the twenty-fourteen World Cup finals.And that's IN THE NEWS in VOA Special English.You can watch a video about the preparationsfor the London Olympics at 51voa.com.