Senior Airman Aaron Griffin, foreground, and Tech.

Senior Airman Aaron Griffin, foreground, and Tech. Sgt. John Hines, 2nd Communications Squadron cable and antenna maintenance, pull a fiber optic cable through an underground manhole system at Barksdale Air Force Base, La., July 12, 2016. The 2nd CS was upgrading the youth center from its copper phone line to fiber optic cable, which has 900 times the capacity of the copper, essentially an upgrade from dial-up internet to high-speed. (U.S. Air Force photo/Senior Airman Curt Beach)