A free comeback concert by boy band BTS in central Seoul on March 21 is expected to draw up to 260,000 people. Authorities plan to deploy around 4,800 police officers and 3,400 officials to manage crowd flow, emergency response, and anti-terrorism measures.<br /><br />Full story: https://www.rappler.com/people/artists/seoul-toughen-security-bts-comeback-concert/
