The first thing I did at the Border Security Expo in Phoenix this March was climb the brown “explosion-resistant” tower, 30 feet high and 10 feet wide, directly in the center of the spacious room that holds this annual trade show. From a platform where, assumedly, a border guard would stand, you could take in the constellation of small booths offering the surveillance industry’s finest products, including a staggering multitude of ways to monitor, chase, capture, or even kill people, thanks to modernistic arrays of cameras and sensors, up-armored jeeps, the latest in guns, and even surveillance balloons.
This article originally appeared at TomDispatch.com.