According to the U.S. Census Bureau, the county has a total area of 685 square miles (1,770 km2), of which 681 square miles (1,760 km2) is land and 3.8 square miles (9.8 km2) (0.6%) is water. It is the fourth-largest county in Tennessee by area. The county is located atop the Cumberland Plateau.
Revenue passenger kilometres (RPK) is a measure of the volume of passengers carried by an airline. A revenue passenger-kilometre is flown when a revenue passenger is carried one kilometre. A passenger for whose transportation an air carrier receives commercial remuneration is called a revenue passenger.
KNK (Hangul: í¬ëí°; RR: Keunakeun, lit. great or to be great) is a five-member South Korean boy band under YNB Entertainment, the company's first male idol group. KNK is an initialism which stands for K-pop kNocK (Hangul: ì¼ì´í ë¸í¬). It means to knock on the door of K-pop with their music.. They held their debut showcase on February 29, 2016 and officially released their debut single album entitled Knock on March 3, 2016.