A pair of B-1B Lancers arrive back home to Ellsworth AFB on January 5th, 2021. The Rockwell B-1 Lancer #Aircraft is a supersonic variable-sweep wing, heavy bomber used by the United States Air Force #USAF. It is commonly called the “Bone”. It is one of three strategic bombers in the #US Air Force fleet as of 2020, the other two being the B-2 Spirit and the B-52 Stratofortress.