I read an article linked through nicar.org, about double dipping in NJ. The article used records about incomes from a variety of employees that worked for the state and were collecting pension checks from previous jobs.
The records used displayed salary, pension, and length of retirement. The reporter used these records to find out how much they were collecting from pension.
The use of computers needed for this article would be to organize a spreadsheet with the content of the investigation as well as find all the salaries and pensions from their employers.