Designed and manufactured by Rockwell International, the B-1B was a long-range supersonic bomber capable of low-level, high-speed flight. Its variable sweep wings, ranging from 15 to 67.5 degrees, added to the aircraft's operating versatility. The aircraft and its General Electric F101 engines were a staple of the Oklahoma City Air Logistics Center's management and maintenance workload from the 1980s forward. Its characteristics included a span of 137 feet, a length of 146 feet, a height of 34 feet, a gross weight of 470,000 pounds, a top speed of 900 miles per hour, a range of 7,500 miles, and ordnance of 41,000 pounds.