Their job is to fix the hardware that the Air Traffic Controllers use to do their job. They are self trained in using the software to filter out the information needed to find lost aircraft. They and the others in automation do this for every aircraft that is reported late, lost or missing. 

To help those in automation help the public, pilots, please follow your flight plans and let people know your take off and landings times as wel as when you have to deviate from those plans.  And please, don't forget to close out your flight plans. It creates undue stress on those of us that are trying to locate you when you are reported late or missing and all you're doing is fishing. Help us help you!