Tia Sparby, kindergarten teacher, brings kindergarten students to the library for a big surprise at the Robbinsdale Elementary School in Rapid City, S.D., Feb. 17, 2012. The surprise was Staff Sgt. George Munoz, 28th Munitions Squadron weapon systems craftsman, jumping out of a box to surprise his son. Until that morning, it had been a year since Munoz had seen his son, due to his year-long assignment to Kunsan Air Base, South Korea. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)