Regal, the second-largest cinema chain in the U.S., announced Monday it will temporarily be closing all theaters as the COVID-19 pandemic rages on and continues to clobber the movie theater industry. The announcement comes just months after the chain began reopening in late August. Cineworld, the parent company of Regal, said the closures will go into effect starting this Thursday at all 536 Regal theaters in the U.S.