Tastee Diner in Silver Spring, where locals have been gathering since it opened in 1946, closed its doors Wednesday afternoon. The diner, located at 8601 Cameron St., closed Wednesday at 2 p.m., an employee confirmed. No reason was provided, and many employees didn’t know it was happening until Wednesday morning. The diner has become a staple of the neighborhood and was declared a historic landmark by the Montgomery County Council in 1994.