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ANDREWS AIR FORCE BASE, Md. (AFPN) -- Senior Airman David Lanthier troubleshoots a telephone circuit inside the voice network systems maintenance shop Feb. 13. Airman Lanthier is assigned to the 89th Communications Squadron as a voice network systems journeyman. The shop maintains about 17,000 telephone lines and troubleshoots a daily average of 10 to 12 telephone problems basewide. (U.S. Air Force photo by Bobby Jones)