U.S. Air Force Technical Sergeant Rob Thomas' family thought they were just getting a tour of the stadium when they were brought into a 49ers weight room.
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VIDEO: Baby sees dad for first time with glasses after emotional military homecoming
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Thomas posted video on Twitter that shows him pretending to be a member of the team with a gym towel draped around his head.
But when he removed the towel, his family was brought to tears after realizing it was Thomas. "I missed you all so much, " said Thomas as he hugged his children.
Thomas said he wanted to thank his family for their sacrifice during his time away.