U.S. Air Force Airman 1st Class Baylee Howell and U.S. Army Private 2nd Class, 366th Training Squadron water and fuels systems maintenance apprentice course students, prepare pieces of copper for soldering at Sheppard Air Force Base, Texas, May 8, 2019. During this course, students learn about the processes of hot water distribution and interior plumbing. Upon graduation, students will have acquired a skillset that will allow for them to execute interior plumbing around an installation. (U.S. Air Force photo by Senior Airman Ilyana A. Escalona)