airman nicholas williams just wrapped up a tour of duty in south korea and received a 28-day pass home. >> i think i'm good. i think so. we'll see. >> reporter: williams' wife whitney played along with the surprise and got a mommy pass for telling a little fib in order to keep the secret about her husband coming home for christmas. >> he started actually crying when i told him that. he was really upset. i felt like a horrible mother for lying to him like that. >> reporter: aaron's lakeview elementary kindergarten class thinks it's story time. >> santa visit fairs all over the world said little bear. >> reporter: that was until jolly old st. nicholas williams showed up. >> santa. >> he wants to come tug on his beard. aaron, see if this is the real santa. >> oh, no! >> pick a curl. take it all off, aaron! badly!