Karmella Van Stockum, 90th Force Support Squadron Education and Training chief in the Education and Training Center on F.E. Warren Air Force Base, Wyo., poses for a portrait in her office Feb. 25, 2015. The Center's mission is to provide the necessary education and training to sustain nuclear surety and personal development for the Warren community. (U.S. Air Force photo by Airman 1st Class Malcolm Mayfield/Released)