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?

Context articles: Yakima Air Terminal
Myrtle Beach International Airport
Direct Air
Doug Shaw Memorial Stadium
TicketReturn.com Field
World Atlantic Airlines
Songbird Airways
Myrtle Beach metropolitan area
Robert Grissom Parkway
Myrtle Beach 250

Yakima Air Terminal (IATA: KYKM, ICAO: YKM) (McAllister Field) is a public airport three miles south of Yakima, in Yakima County, Washington.
 Owned by the City of Yakima, it is used for general aviation and commercial air service.
 Yakima is served by one scheduled air carrier (Alaska Airlines) and two non-scheduled carriers (Sun Country Airlines and Xtra Airways).
 Sun Country Airlines provide charter flights to Laughlin, NV and Xtra Airways provide charter flights to Wendover, NV.
Myrtle Beach International Airport (IATA: MYR, ICAO: KMYR, FAA LID: MYR) is a county-owned public-use airport located three nautical miles (6 km) southwest of the central business district of Myrtle Beach, in Horry County, South Carolina, United States.
 It was formerly known as Myrtle Beach Jetport (1974–1989) and is located on site of the former Myrtle Beach Air Force Base, which also includes The Market Common shopping complex.
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.
 Its main base was Myrtle Beach International Airport.
 Direct Air's flights were operated by Sky King, Inc., Xtra Airways, World Atlantic Airlines, and USA Jet.
 In March 2012 Direct Air ceased operations, stranding many of its passengers.
 The airline planned to resume operations on May 15, 2012, although this was contested by the U.S. Department of Transportation.
 The charter carrier was subject to Chapter 7 liquidation on April 12, 2012.
Doug Shaw Memorial Stadium is a 6,500-capacity  multi-use stadium located in Myrtle Beach, South Carolina and the home of Myrtle Beach FC.
 The stadium is named for Doug Shaw, Sr., the long-time coach of the Myrtle Beach High School Seahawks football team.
 During his reign on the sidelines, his Seahawk teams went to the AAA state championship game five years in a row, winning the title four times.
 The stadium is used for football, soccer, and track & field.
 It is the main venue for rectangular sports in Myrtle Beach but has been displaced by Brooks Stadium as the largest stadium in Horry County for those sports.
 It remains the county's premiere track & field venue.
TicketReturn.com Field at Pelicans Ballpark (previously known as Coastal Federal Field and BB&T Coastal Field) is located in Myrtle Beach, South Carolina and is the home field of the Myrtle Beach Pelicans, a minor league affiliate of the Chicago Cubs in the Carolina League.
 The stadium, located just off Highway 17 in Myrtle Beach, opened in 1999.
 It holds up to 6,599 people.
 It is the finish point of the annual Bi-Lo Myrtle Beach Marathon, an athletics event held in February of each year.
World Atlantic Airlines is the trading name of Caribbean Sun Airlines, an airline operating on-demand and scheduled charter services.
 Its corporate headquarters are located in Suite 450 of Building 845 on the property of Miami International Airport in unincorporated Miami-Dade County, Florida.
Songbird Airways (formerly "Sky King") is a charter airline based in Miami, Florida.
 Sky King was founded in July 1990 to fly for the NBA's Sacramento Kings.
 Sky King operated flights from Florida to Cuba on behalf of Customer Service Providers (CSPs).
 Sky King also conducted flights of deportees to undisclosed destinations on behalf of U.S. Immigration and Customs Enforcement (ICE).
 In the past, the airline provided charter service to sports teams and businesses using Boeing 737 aircraft sporting various seat configurations.
 The airline filed for Chapter 11 bankruptcy protection on March 9, 2010, after it was unable to meet the payment demands of one of its largest creditors, fuel supplier Mercury Air Group.
 It filed for bankruptcy again in 2012.
The Myrtle Beach metropolitan area (also Myrtle Beach-Conway-North Myrtle Beach MSA) is a census-designated metropolitan area consisting of Horry County and Georgetown County in South Carolina and Brunswick County in North Carolina.
 The region's primary cities, in order by population are Myrtle Beach, South Carolina; Conway, South Carolina; Leland, North Carolina; North Myrtle Beach, South Carolina and Georgetown, South Carolina.
 Another primary city is Oak Island, North Carolina and though the permanent population is only 6,783 as of the 2010 census, the population jumps up to about 50,000 during the summer time.
Robert M. Grissom Parkway, locally known as Grissom Parkway, is a major four-lane connector highway in Myrtle Beach, South Carolina.
 The road begins at Harrelson Boulevard near Myrtle Beach International Airport and terminates in Carolina Forest, South Carolina at SC Highway 31 and International Drive.
 It provides access to Myrtle Beach attractions such as Coastal Grand Mall, TicketReturn.com Field and Broadway at the Beach and is used as an alternative road to U.S. 17 and Kings Highway in Myrtle Beach.
 It has bike paths and sidewalks for pedestrian traffic.
 These are part of the East Coast Greenway, a 3,000 mile long system of trails connecting Maine to Florida.
The Myrtle Beach 250 was a NASCAR Busch Series stock car race held at Myrtle Beach Speedway, in Myrtle Beach, South Carolina.
 Added to the Busch Series schedule in 1988, Myrtle Beach Speedway hosted one race per year through the 2000 season, after which it was removed from the schedule.
 The first three races held were 200 laps, covering 107.6 mi .
 The distance was extended to 250 laps starting in 1991, where it remained for the rest of the race's history.
 Jimmy Spencer and Jeff Green were the only drivers to win twice in this race.
 Spencer won at both the 200 and 250 laps race lengths, while Green won the final two races ever held at Myrtle Beach.