sentences:  The 449th was redesignated a Very Heavy bombardment group and was programmed for very long range strategic bombardment operations against the Japanese Home Islands using Boeing B-29 Superfortresses.Many personnel were demobilized upon arrival at the port of embarkation; a small cadre of key personnel was formed and the group was then established at Sioux Falls Army Air Field, South Dakota in late May where the group was reformed with new personnel.After a period of organization, the group moved to Dalhart Army Air Field, Texas, where initial training was conducted with former II Bomber Command B-17 Flying Fortress; B-25 Mitchells and some B-29s.