The Rockwell B-1B Lancer is the improved operational branch of the B-1 supersonic bomber family. Initiated in 1981 after the B-1A program, the B-1B added structure and improved radar while reducing radar cross-section and maximum speed; it entered United States Air Force service in 1985 as a long-range, multi-mission conventional bomber with variable-geometry wings and terrain-following capability.
Alerts for directly linked future launches and major activity.