MISSOURI — A military sound weapon called the LRAD is trickling its way into domestic agencies across the country. Its latest application will be for use against drivers on Missouri’s highways. The Missouri Department of Transportation (MoDOT) has purchased two Long Range Acoustic Devices (LRAD) with the intent of deploying them near work zones. The idea is to penetrate nearby vehicles with an overwhelmingly shrill sound to supposedly get them to slow down. Called a “safety device” by the local media, the LRAD is most famous for use against civilians overseas during military operations. Its 153 dB sound waves are...