U.S. Air Force Airman 1st Class Chance Sturgeon, 52nd Civil Engineer Squadron Pavement and Construction equipment operator, places a barrier pole in a roadway at Spangdahlem Air Base, Germany, Sept. 10, 2018, during a base-wide readiness exercise. Barriers are used to protect facilities and personnel in the event of a base intrusion. The exercise stressed the importance of response, readiness, and resiliency. (U.S. Air Force photo by Airman 1st Class Valerie Seelye)