ELLSWORTH AIR FORCE BASE, S.D. -- Senior Airman Joshua Ortiz-Mendoza, 28th Mission Support Group client systems technician, checks the wiring to a computer at the 37th Bomb Squadron to ensure nothing is unplugged, March 16. Airman Ortiz-Mendoza troubleshoots faulty computers and equipment as part of his duties as a CST. U.S. Air Force photo/Airman 1st Class Anthony Sanchelli)