Regal Entertainment Group, abbreviated REG, is an American movie theater chain headquartered in unincorporated Halls Crossroads, just north of Knoxville, Tennessee. Regal operates the largest and most geographically diverse theater circuit in America, consisting of 7,334 screens in 588 locations in 44 states along with American territories Guam, Saipan, American Samoa, Grand Cayman, and the District of Columbia, as of September 2013. The three main theatre brands operated by Regal Entertainment Group are Regal Cinemas, Edwards Theatres, and United Artists Theatres.