9 ELECTRONIC SENSOR, TRACKING, COMMUNICATION, NETWORK, AND TARGETING SENSORS, NAMELY THROUGH-WALL IMAGING AND COMMUNICATION SENSORS, SUBSURFACE SENSORS, GROUND PROBING RADAR, SEISMIC RADAR, ULTRA-WIDEBAND THROUGH-WALL IMAGING AND TARGET DETECTION SENSORS THROUGH-OPAQUE-MATERIAL IMAGING AND TARGET DETECTION SENSORS, FOLIAGE PENETRATION IMAGING AND TARGET DETECTION SENSORS, SUBSURFACE IMAGING AND TARGET DETECTION SENSORS; ELECTRONIC COMMUNICATION SYSTEMS COMPRISED HYBRID MODEMS FOR POWER LINE AND PHONE LINE HIGH-SPEED COMMUNICATIONS, THROUGH-WALL COMMUNICATIONS, SUBSURFACE COMMUNICATIONS, THROUGH OPAQUE MATERIAL COMMUNICATION SYSTEMS, ELECTRONIC COMMUNICATIONS SWITCHES; ELECTRONIC NETWORK SYSTEMS COMPRISED OF COMPUTER HARDWARE AND ROUTERS; ELECTRONIC TARGETING SYSTEMS COMPRISED OF ELECTROMAGNETIC, SONAR, INFRARED, LIDAR; ELECTRONIC TARGETING SYSTEMS COMPRISED OF AUTOMATIC TARGET RECOGNITION; PRINTED ELECTRONIC CIRCUITS; HOUSING FOR ELECTRONIC DEVICES NAMELY ELECTROMAGNETIC AND SEISMIC SENSORS, THROUGH-WALL IMAGING SENSORS, GROUND PROBING RADAR SENSORS, SUBSURFACE SENSORS, THROUGH-OPAQUE-MATERIAL SENSORS, FOLIAGE PENETRATION SENSORS, COMMUNICATION SYSTEMS, ULTRA-WIDEBAND COMMUNICATION SYSTEMS, COMPUTER MODEMS