ELLSWORTH AIR FORCE BASE, S.D. – (Left) Airman 1st Class James Allen, structures apprentice and Airman 1st Class Bryan Huberty, pavements and construction operator, both from the 28th Civil Engineer Squadron, take aim in the prone position during a Phase II Operational Readiness Exercise, Sept. 16. Numerous Airmen stood guard in bunkers during the Phase II ORE ready to take action during ground attacks. (U.S. Air Force photo/Senior Airman Corey Hook)