Technology sees tunnels

Three companies are marketing an airborne system designed to detect underground tunnels and caves. The INSITE VI system resulted from a partnership between AeroTec, NVision Solutions and EnTech Engineering. The system uses a helicopter fitted with a sensor able to detect changes in terrain and ground temperature. Experts can see up to 80 feet deep into the earth to find caves, tunnels, pipes, and leaks in levees not visible from the ground. NVision is based in Bay St. Louis, Miss., AeroTec in Birmingham, Ala., and EnTech in St. Louis, Mo. AeroTec also has an office in Picayune, Miss. (Source: Enterprise for Innovative Geospatial Solutions, 06/17/09)