Airman 1st Class Michael Butler, 28th Logistics Readiness Squadron outbound cargo journeyman, secures a barrier at Ellsworth Air Force Base, S.D., Jan. 16, 2020. Red Flag is an annual training exercise for both U.S. and coalition forces that provides realistic training through a simulated combat environment, preparing them for future exercises, missions and deployments. (U.S. Air Force photo by Senior Airman Michael Jones)