NEW : Young people do a `` fantastic job '' in a similar role at the annual Wimbledon tennis championships , and there 's no reason to think they wo n't perform well at London 2012 , the spokesman said . Security firm , where young people employed for the Olympics will do a good job . Sebastian Smith says he is ` ` extraordinarily impressed with '' security contractor ' . An extra 3,500 are to be brought in to cover a shortfall in security staff . G4S says it has about 500 people at work across 100 venues ; more undergoing training .
NEW : Security firm , where young people employed for the Olympics will do a good job . Sebastian Smith says he is ` ` extraordinarily impressed with '' security contractor ' . An extra 3,500 are to be brought in to cover a shortfall in security staff . G4S says it has about 500 people at work across 100 venues ; more undergoing training .