B-1s, KC-135 launch for first LFE in PRTC
A B-1 bomber launches from Ellsworth Air Force Base, S.D., Dec. 2, 2015. The B-1 is one of many aircraft participating in the first Large Force Exercise in the newly expanded Powder River Training Complex. (U.S. Air Force photo by Airman 1st Class James L. Miller/Released.)

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