DOI began an organized lecture program in 2002 as part of a proactive effort to encourage people to report corruption and to serve as a deterrent. This lecture program is designed for City employees in all City agencies as well as individuals who do business with the City. One of its successes includes DOI receiving corruption complaints and tips following the lectures, some of which have resulted in significant criminal cases. For example, following a tip received from a lecture held at the Department of Environmental Protection ("DEP"), DOI initiated an investigation that culminated in the arrest of three DEP employees on illegal gun sale charges (in PDF ). DOI is committed to this outreach effort to ensure that City employees are aware of their obligation to report corruption to DOI and their right to be protected when doing so. The result: DOI Inspectors General have presented more than 4,000 such lectures since 2002 and educated tens of thousands of City workers and contractors about their obligation to report corruption and wrongdoing.