Knoxville, Tenn. — Regal Cinemas will temporarily suspend operations at all of its 536 U.S. theaters beginning Thursday, Oct. 8. British owner-operator Cineworld owns Knoxville, Tenn.-based Regal Cinemas, which has about 7,000 screens across its U.S. portfolio of theaters. Cineworld also announced plans to close all of its theaters in the United Kingdom this week. The closures will impact about 40,000 employees, according to Cineworld. “This is not a decision we made lightly, and we did everything in our power to support a safe and sustainable reopening in the United …