U.S. Air Force Airman 1st Class Aimee Grills performs during a Tops in Blue concert Dec. 9, 2011, Eielson Air Force Base, Alaska. Grills is a 354th Civil Engineer Squadron engineering apprentice and a Chesterfield, Ind. native. Tops in Blue is composed of 35 to 40 vocalists, musicians, dancers, and technicians. (U.S. Air Force photo/Staff Sgt. Jim Araos/Released)