56 days . . . 55 days . . . 54 days . . . Chelsea Caudle began signing her text messages this summer with a countdown. At 14 years old, she knew no better way to express what was coming. Day Zero was to be Oct. 7, the day Dad left for Army basic training in Fort Jackson, S.C. He was moving 950 miles from their home in Watertown, 950 miles from Mom.