LIGHTS OUT, AIRPORT CLOSED, TRACKS BLOCKED. A "corner tower" on a high tension line in the Milwaukee area collapsed into another tower, interrupting electric power to Mitchell Field and blocking the old Milwaukee Road tracks, leading to a morning suspension of Amtrak Hiawatha service. A "corner tower" is a particularly critical part of a high tension line, as it is located where the line changes direction (it would be more accurate to call it a vertex tower at the end of two tangents, but that's the drawback of a good grounding in mathematics). As the spokeswoman for the power company noted, "It's a beautiful Saturday afternoon, and the towers tipped over. It's not an act of God." The tower collapsed shortly after Senator Edwards, the Democratic nominee, arrived at Mitchell Field. Owen at Boots and Sabers asks, "Sabotage in Milwaukee?" and Sean at The American Mind wonders, "Why'd They Fall Down?"