Editor's note: Pen Farthing has been named a 2014 Top 10 CNN Hero. Voting for CNN Hero of the Year continues through Sunday, Nov. 16). All of this year's Top 10 CNN Heroes will be honored during CNN Heroes: An All-Star Tribute" -- Sunday, December 7 (8pm ET) on the global networks on CNN.
(CNN) -- Staff Sgt. Edwin Caba served in Afghanistan for nearly three years. Like his fellow soldiers, he longed for a sense of normalcy during his tours.