I am sure that they take tornadoes as seriously in Iowa as anywhere else. This video suggests that maybe baseball is more important than safety, as a Little League team is seemingly unconcerned about a funnel cloud that is visible in the distance. Maybe they all know how much time they have before it's not safe to be where they are. Or maybe that's just a baby twister and is nothing to be worried about. My guess is that whoever took the video is getting the first view of this thing and that practice came to a screeching halt soon after.