

On Monday night, BTS performed their latest single “ON” in an empty Grand Central Terminal in New York City to close out The Tonight Show with Jimmy Fallon. (They also occupied an empty subway car for “Subway Olympics” and served pastrami sandwiches at Katz’s Deli in sketches that are similarly charming but not nearly as impressive.) According to the transportation hub’s website, Grand Central sees 750,000 passengers a day—even in the wee morning hours when drunks waddle in and realize they’ve missed the last train out. This leaves me with a few questions starting with the obvious: how the hell did they pull this off?