the James River. Virginia has five major airports: Washington Dulles International and Reagan Washington National in Northern Virginia, both of which handle more than twenty million passengers a year, Richmond International southeast of the state capital, and Newport News/Williamsburg International Airport and Norfolk International in Hampton Roads. Several other airports offer limited commercial passenger service, and sixty-six public airports serve the state's aviation needs. The Virginia Port Authority's main seaports are those in Hampton Roads, which carried of total cargo , the sixth most of United States ports. The Eastern Shore of Virginia is the site of Wallops Flight Facility, a rocket launch center owned by NASA, and the Mid-Atlantic Regional Spaceport, a commercial spaceport. Space tourism is also offered through Vienna-based Space Adventures. Sports Virginia is the most populous U.S. state without a major professional sports league franchise. The reasons for this include the lack of any dominant city or market within the state, a reluctance to publicly finance stadiums, and the proximity of teams in Washington, D.C., Baltimore, Charlotte, and Raleigh. A proposed arena in Virginia Beach designed for an NBA franchise became the latest unsuccessful sports initiative when the city council there ended support in 2017. Virginia Beach had previously been considered for an NBA franchise in 1987, which ultimately became the Charlotte Hornets. The Virginia Squires of the ABA started in Norfolk in 1970, but lost momentum after trading "Dr. J" Julius Erving and folded just one month before the ABA–NBA merger in 1976. Five minor league baseball and two mid-level hockey teams play in Virginia. Norfolk is host to two: The Triple-A Norfolk Tides and the ECHL's Norfolk Admirals. The Double-A Richmond Flying Squirrels began playing at The Diamond in 2010, while the Fredericksburg Nationals, Lynchburg Hillcats, and Salem Red Sox play in the Low-A East league. Loudoun United FC, the reserve team of D.C. United, debuted in the USL Championship in 2019, while the Richmond Kickers of the USL League One have operated since 1993 and are the only team in their league to win both the league championship and the U.S. Open Cup in the same year. The Washington Commanders also have their headquarters in Ashburn and their training facility in Richmond, and the Washington Capitals practice at MedStar Capitals Iceplex in Ballston. Virginia has many professional caliber golf courses including Kingsmill Resort outside Williamsburg, which hosts an LPGA Tour tournament in May,