British Prime Minister David Cameron and his wife, Samantha, visited the Sept. 11 memorial in New York City on Thursday. They were joined by New York City Mayor Michael Bloomberg and American citizen Charles Wolf, whose wife died during the World Trade Center attacks. The Camerons touched the bronze plaques and stared into the reflecting pool after they visited One World Trade Center, the new skyscraper under construction at the site. Later on Thursday, Cameron traveled to Newark, N.J., where he toured businesses that have gotten a boost from local government. Before flying back to Britain late Thursday, Cameron is scheduled to visit the New York Stock Exchange and then some students at New York University.