Question: Southern Sky Air Tours, d/b/a Direct Air, an airline business based in Myrtle Beach, South Carolina, were operated by Sky King, Inc., Xtra Airways, USA Jet, and Caribbean Sun Airlines, based in what state?
Sentence (from "Direct Air"): Southern Sky Air Tours, d/b/a Direct Air was an airline business based in Myrtle Beach, South Carolina, USA Direct Air started in 2007 and leased aircraft with charter airlines.
Relevant evidence: Yes