U.S. Army Pvt. Erica Alexander, 366th Training Squadron water and fuel systems student, is a native of Birmingham, Alabama, and represents joint students in the water and fuel systems course at Sheppard Air Force Base, Texas, Sept. 19, 2017. Students in this course learn how to manage plumbing, wastewater collection systems, liquid fuel storage and natural gas distribution. (U.S. Air Force photo by Staff Sgt. Kyle E. Gese)