Air Force Tech. Sgt. Jose Piedra, center, 373rd Training Squadron Detachment 4 production supervisor and instructor, demonstrates splicing and building a 1553B databus cable to Airman 1st Class Shania Westin, left, 373rd TRS student, for the C-130J Feb. 23, 2017 at the Center of Excellence on Little Rock Air Force Base, Ark. The Airman must understand how the cable functions as it transfers information throughout the aircraft and be able to build new ones effectively. ( Air Force photo by Staff Sgt. Jeremy McGuffin)

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