BAYPORT - A sister and brother who hadn't seen their Army mom in months were stunned today when she suddenly walked into their classrooms at school.U.S. Army Pvt. Michele Barrett had been away for training since before Christmas. She wasn't due home until August, so her 16-year-old daughter, Sarah, and her 10-year-old son, Aaron, were overwhelmed with joy to see her.Barrett says she and her children talk via Skype, but it's not the same: she recently missed her daughter's prom. The children's mother is home until Sunday, when she returns to Georgia for more training. Her unit, the 14th Combat Support Hospital, is scheduled to deploy to Afghanistan in the fall.To watch Pvt. Michele Barrett surprise her children at school, click on iO Extra on Channel 612.