WHITEMAN AIR FORCE BASE, Mo. - Staff Sgt. Darreyl Walker, 217th Engineering Installation Squadron cable systems technician, climbs down into a maintenance tunnel, Sept. 24. Air National Guard members from both the 271st and the 241st spent more than two months at Whiteman replacing copper transmission cable with more efficient fiber optic cable. The fiber optic cable will provide 50 percent more capability and expansion to utilize a greater number of networked products. (U.S. Air Force photo/Airman 1st Class Carlin Leslie)
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