Oklahoma Air & Space Port at Clinton-Sherman Airport (KCSM) is OSIDA’s FAA-licensed inland spaceport and aerospace operations site in Burns Flat, Oklahoma. It supports general aviation and aerospace operations with a 13,503 × 300-foot all-weather concrete runway, an adjacent 5,193 × 75-foot runway, ILS/REILS/PAPIs, a manned tower, a full-service FBO with Jet-A fuel and aircraft repairs, and electronic access-controlled gates. Its Infinity One spaceflight corridor is FAA-approved for spaceflight operations outside restricted airspace and is 152 miles long by 50 miles wide; the site is qualified for reusable launch-vehicle operations and offers polar-orbit launch capability. This is an operational airport and industrial spaceport, not a general walk-in visitor attraction; contact OSIDA or the airport manager for access, tenant, launch and current safety arrangements. OSIDA visitor/administrative contact: 121 First Street, P.O. Box 689, Burns Flat, Oklahoma 73624, United States; airport reference coordinates: 35.3398392, -99.2004994.