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 "World Atlantic Airlines"): Its corporate headquarters are located in Suite 450 of Building 845 on the property of Miami International Airport in unincorporated Miami-Dade County, Florida.
Relevant evidence: Yes