installation, maintenance and repair of metal detectors; installation, maintenance and repair of ground penetrating radar sensors; installation, maintenance and repair of non-intrusive sensors; installation, maintenance and repair of metal detectors, ground penetrating radars and systems, imaging and visualization systems for detection of objects and/or geological features; installation, maintenance and repair of detectors, imaging and/or visualization systems, namely, sensors and/or metal detectors for locating and/or imaging objects, geological features, buried objects, hidden objects, land mines, explosive hazards, and/or underground anomalies; installation, maintenance and repair of vehicle mounted mine and explosives detection systems; installation, maintenance and repair of vehicle mounted detectors, imaging and/or visualization systems, namely, sensors and/or metal detectors for locating and/or imaging objects, geological features, buried objects, hidden objects, land mines, explosive hazards, and/or underground anomalies; and installation, maintenance and repair of mine and explosives detection systems
Building Construction and Repair