"If One Direction plays tomorrow, the stadium will blow up," was the threat phoned in on July 5, 2013 to Hershey Entertainment and Resorts. One Direction, a wildly popular English pop group, was on a tour of the United States last summer. The threat set in motion a number of security measures. The stadium was placed on lockdown before the concert, police conducted a bomb sweep and security personnel searched every bag entering the stadium, prosecutors said.