adaptive hazard avoidance and alert instrument for aircraft comprised of a self contained computer, an integrated hazard database and terrain depiction display with 3-D terrain, obstacle, flight plan and traffic overlays

maintenance service for inside telephone wiring and outlets

ELECTRONIC SECURITY APPARATUS COMPRISING BURGLAR ALARMS, FIRE ALARMS, TEMPERATURE CONTROLS, ACCESS CONTROL UNITS, INCLUDING THOSE ACTIVATED BY ENCODED CARDS, CLOSED CIRCUIT TELEVISION CAMERAS, RECORDERS, AND MONITORS, ALARM SIGNAL MONITORING UNITS, AND TEMPERATURE CONTROL MONITORING UNITS