The United States Golf Association’s U.S. Open will be held from June 11 to 17 in Oakmont, Pa., and Allegheny County Airport FBO Corporate Air is taking reservations for ramp space. Practice rounds are June 11 through 13; the championship event will begin June 14. Corporate Air will provide transportation to the U.S. Open for a per-person flat-rate fee, or visitors can rent Hertz cars at the FBO. Voyager Jet Center is the airport’s other FBO, and both facilities are open 24/7.