A B-1B Lancer assigned to the 28th Bomb Wing, Ellsworth Air Force Base, S.D., takes off for Exercise Valiant Shield at Andersen AFB, Guam, Sept. 23, 2020. Valiant Shield allows the U.S. Joint Force to more fully develop Joint All-Domain Operations concepts through exercises and experimentation for application in the Indo-Pacific Area of responsibility. (U.S. Air Force photo by Staff Sgt. Nicolas Z. Erwin)