Orlando International Airport is a public airport located six miles (10 km) southeast of the central business district of Orlando, a city in Orange County, Florida, United States. It is the busiest airport in Florida (by the number of passengers) owing to Orlando's popularity as a tourist destination and its enormous residential and commercial growth. The airport serves as a secondary hub for AirTran Airways, and a mini-hub for Delta Connection carriers Chautauqua Airlines and Freedom Airlines. MCO is a focus city for Delta Air Lines and Southwest Airlines. The airport also hosts AirTran's corporate headquarters, though the airline maintains its main hub of operations at Hartsfield-Jackson Atlanta International Airport in Atlanta, Georgia. The airport will also be home to a JetBlue training facility. Southwest Airlines is currently the airport's largest carrier in terms of passengers traveled; SWA carried 1/5 of all passenger traffic at MCO in 2006. In 2006 it was visited by 34.8 million passengers, making it the 13th busiest airport in the United States and the 24th-busiest in the World. It is the 15th busiest international gateway in the United States, behind Philadelphia International Airport; JFK International in New York City ranks first. Floridians often joke that the airport code MCO stands for "Mickey's Corporate Office" or "Mickey and Co." – Orlando being the location of the Walt Disney World Resort – but it actually stands for the airport's former name, McCoy Air Force Base, named for Colonel Michael N. W. McCoy, who died during an annual competition held at the base. The Greater Orlando area is also served by Orlando Sanford International Airport (SFB), and more indirectly by Daytona Beach International Airport (DAB) and Melbourne International Airport (MLB). The Miami airspace, however, is still larger as it includes the Fort Lauderdale-Hollywood International Airport, Miami International Airport, and Palm Beach International Airport. ...