U.S. Air Force Tech. Sgt. Gregory Fifer, 20th Logistics Readiness Squadron NCO in charge of the fuels laboratory, starts his lesson with a group of high school home school students at Shaw Air Force Base, S.C. Nov. 7, 2013. The students, who were from the local Sumter, S.C. area, got a real-world lesson on math and chemistry in the fuels laboratory. (U.S. Air Force photo by Airman 1st Class Jonathan Bass/Released)