Security guard engages in high-speed chase with rogue balloon at U.S. Cellular Field

The tension was palpable all over the Cell. Before the second inning of Sunday's Athletics-White Sox game, this security guard trotted out to the outfield wall to single-handedly apprehend an unauthorized trespasser: a balloon.

We challenge you to watch this clip without hearing the Mission Impossible theme in your head. Or, on second thought ...

-- Molly Fitzpatrick / MLB.com